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Full vulnerability report · 2026
CVE-2026-39819High confidence

Invoking "go bug" follows symlinks in predictable temporary filenames in cmd/go

Go toolchain · cmd/go

5.3MediumCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 18 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityMediumOperational priority:Low, lowered one band.downgradedsince 8 May 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 0.15% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Monitor vendor guidance and exploitation sources for a material change.

Verification

  1. Confirm that the asset runs Go toolchain cmd/go and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: No default targetRemediation target: Normal maintenance

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 18 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Alpine, Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

10 package states
Package result overrides the generic status

BlackTree has verified remediation for at least one product or source, but the relevant distribution still reports no fixed package for 2 affected package states shown here. Treat those rows as affected with no fix until that distribution publishes a fixed version.

Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Alpine v3.23v3.23 · communitygoVendor fix publishedAlpine records a security fix at this version. An absent entry does not mean the package is unaffected.1.25.10-r0Alpine Security Database ↗Source updated 11 Sep 2026
Debian trixietrixie · sourcegolang-1.24Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourcegolang-1.19Affected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcegolang-1.25Vendor fix publishedDebian records a fixed source-package version for this release.1.25.10-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourcegolang-1.26Vendor fix publishedDebian records a fixed source-package version for this release.1.26.3-1Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourcegolang-1.26Vendor fix publishedDebian records a fixed source-package version for this release.1.26.3-1Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivegolang-1.21Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivegolang-1.22Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivegolang-1.23Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivegolang-1.24Under evaluationCanonical reports that the package might be affected and still needs evaluation or fixing.Not published in this feedCanonical Ubuntu Security ↗Source updated 5 Oct 2026
Open-source package ranges1 source-attributed range

These OSV and GitHub advisory ranges apply only to the named package and ecosystem. A listed fixed version is not a universal product patch or proof that an update is installed.

Ecosystem and packageAffected rangeFirst fixed versionEvidence
GotoolchainSEMVER: introduced 0; fixed 1.25.10; introduced 1.26.0-0; fixed 1.26.31.25.10, 1.26.3OSV record ↗aggregator derived · 22 Sep 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

1 current
CVE-2026-39819 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitycmd/go: golang: Go 'go bug' command: Arbitrary file overwrite via symlink attack
1 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • golang1.25.src as a component of Red Hat Hardened Images
Summary
A flaw was found in the 'go bug' command within the Go programming language tools. This command writes to temporary files with predictable names. A local attacker with access to the system's temporary directory could exploit this by creating a symbolic link (symlink) with one of these predictable names. This would cause the 'go bug' command to overwrite the target of the symlink, potentially leading to arbitrary file overwrite.
Remediation
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2026-28422

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionPatch only the product branches with a verified fix

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority. Verified remediation exists for at least one product or source, but 18 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.

What

The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.

Why

Creating and using insecure temporary files can leave application and system data vulnerable to attack.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

The "go bug" command writes to two files with predictable names in the system temporary directory (for example, "/tmp"). An attacker with access to the temporary directory can create a symlink in one of these names, causing "go bug" to overwrite the target of the symlink.

Why

Creating and using insecure temporary files can leave application and system data vulnerable to attack.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
None recorded

No exploit-tagged reference or CISA SSVC proof-of-concept state is currently recorded. Research may still exist outside the structured feeds.

Likely attack path
local access → Insecure Temporary File → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
High: exploitation depends on specific conditions
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-377 ↗

CWE-377: Insecure Temporary File. Creating and using insecure temporary files can leave application and system data vulnerable to attack.

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACHighAttack complexity: Successful exploitation depends on specific conditions outside the attacker's direct control.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.IHighIntegrity impact: A successful attack can cause a major loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-377
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

BSI · German · WID-SEC-2026-2455Oracle Solaris Drittanbieterkomponenten: Mehrere Schwachstellen

Ein entfernter, anonymer oder authentisierter Angreifer kann mehrere Schwachstellen in verschiedenen Komponenten von Drittanbietern in Oracle Solaris ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory ↗
BSI · German · WID-SEC-2026-1437Golang Go: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um Sicherheitsvorkehrungen zu umgehen, Daten zu manipulieren, Cross-Site-Scripting-Angriffe durchzuführen, vertrauliche Informationen offenzulegen oder einen Denial-of-Service-Zustand zu verursachen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1249Multiples vulnérabilités dans les produits VMware

ord?id=CVE-2026-33815 Référence CVE CVE-2026-33816 https://www.cve.org/CVERecord?id=CVE-2026-33816 Référence CVE CVE-2026-33818 https://www.cve.org/CVERecord?id=CVE-2026-33818 Référence CVE CVE-2026-34180 https://www.cve.org/CVERecord?id=CVE-2026-34180 Référence CVE CVE-2026-34181 https://www.cve.org/CVERecord?id=CVE-2026-34181 Référence CVE CVE-2026-34182 https://www.cve.org/CVERecord?id=CVE-2026-34182 Référence CVE CVE-2026-34183 https://www.cve.org/CVERecord?id=CVE-2026-34183 Référence CVE CVE-2026-3783 https://www.cve.org/CVERecord?id=CVE-2026-3783 Référence CVE CVE-2026-39817 https://www.cve.org/CVERecord?id=CVE-2026-39817 Référence CVE CVE-2026-39819 https://www.cve.org/CVERecord?id=CVE-2026-39819 Référence CVE CVE-2026-39820 https://www.cve.org/CVERecord?id=CVE-2026-39820 Référence CVE CVE-2026-39821 https://www.cve.org/CVERecord?id=CVE-2026-39821 Référence CVE CVE-2026-39822 https://www.cve.org/CVERecord?id=CVE-2026-39822 Référence CVE CVE-2026-39823 https://www.cve.org/CVERecord?id=CVE-2026-39823 Référence CVE CVE-2026-39825 https://www.cve.org/CVERecord?id=CVE-2026-39825 Référence CVE CVE-2026-39826 https://www.cve.org/CVERecord?id=CVE-2026-39826 Référence CVE CVE-2026-39827 https://www.cve.org/CVERecord?id=CVE-2026-39827 Référence CVE CVE-2026-39828 https://www.cve.org/CVERecord?id=

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-015677The Go ProjectのGoにおけるリンク解釈に関する脆弱性

"go bug"コマンドは、システムの一時ディレクトリ（例："/tmp"）にある予測可能な名前の2つのファイルに書き込みます。攻撃者が一時ディレクトリにアクセスできる場合、これらの名前のいずれかにシンボリックリンクを作成することができ、"go bug"コマンドがそのシンボリックリンクのターゲットを上書きしてしまいます。

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
golang1.25.src as a component of Red Hat Hardened Images
Fixed
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 7 May 2026 · Last source change 8 May 2026, 21:29 UTC · CWE-377 · Insecure Temporary File

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2026-28422
Product sourceVendor CSAF · Red Hat Product Security
Remediation sourceVendor CSAF · Red Hat Product Security
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    golang1.25.src as a component of Red Hat Hardened Images; golang1.26.src as a component of Red Hat Hardened Images; golang1.27.src as a component of Red Hat Hardened Images · Fixed: go-toolset-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-docs-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-misc-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-src-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-tests-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 131 more
    After
    golang1.25.src as a component of Red Hat Hardened Images · Fixed: go-toolset-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-docs-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-misc-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-src-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-tests-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 157 more
    Red Hat Product Security ↗
  2. Affected versionsThe structured affected or fixed version information changed.
    Before
    < 1.25.10; 1.26.0-0 < 1.26.3 · Fixed: An authoritative update reference is available, but the fixed version is not recorded in the structured CVE fields. Check the linked vendor advisory for the applicable release.
    After
    < 1.25.10; 1.26.0-0 < 1.26.3 · Fixed: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
    Red Hat Product Security ↗
  3. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: go-toolset-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-docs-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-misc-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-src-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-tests-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 131 more
    After
    golang1.25.src as a component of Red Hat Hardened Images; golang1.26.src as a component of Red Hat Hardened Images; golang1.27.src as a component of Red Hat Hardened Images · Fixed: go-toolset-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-docs-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-misc-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-src-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-tests-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 131 more
    Red Hat Product Security ↗
  4. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: go-toolset-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-docs-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-misc-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-src-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-tests-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 110 more
    After
    Fixed: go-toolset-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-docs-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-misc-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-src-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-tests-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 131 more
    Red Hat Product Security ↗
  5. Vendor guidanceAuthoritative vendor guidance changed from remediation: access.redhat.com/CVE-2026-39819 to remediation: access.redhat.com/CVE-2026-39819.
    Before
    remediation: access.redhat.com/CVE-2026-39819
    After
    remediation: access.redhat.com/CVE-2026-39819
    Red Hat Product Security ↗
  6. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:31b448d2a414dfd39327dad7e554901e5afb5f86fc683be7efc49e802a5ad8f7_arm64 as a component of multicluster engine for Kubernetes 2.11.0; registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:8d69fe36725afd3ca0bf797ea434f7d77890627691aa6e43bc09065fe0825687_ppc64le as a component of multicluster engine for Kubernetes 2.11.0; registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:9bd4ebda1ac35bbbca4ad61e11b2805a9302edbdd5ca119fc459a63ebb3d0bb0_amd64 as a component of multicluster engine for Kubernetes 2.11.0; registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:a7c807d050f3189f7d35e53ba608220896439248f8d65bea873f45b98d0f5bdb_s390x as a component of multicluster engine for Kubernetes 2.11.0
    After
    Fixed: go-toolset-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-bin-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-docs-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-misc-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-race-0:1.26.5-1.el10_0.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-src-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); golang-tests-0:1.26.5-1.el10_0.noarch as a component of Red Hat Enterprise Linux AppStream EUS (v. 10.0); go-toolset-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); go-toolset-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.s390x as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.src as a component of Red Hat Enterprise Linux AppStream (v. 10); golang-0:1.26.3-4.el10_2.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 10); and 110 more
    Red Hat Product Security ↗
  7. Affected versionsThe structured affected or fixed version information changed.
    Before
    Fixed: registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:31b448d2a414dfd39327dad7e554901e5afb5f86fc683be7efc49e802a5ad8f7_arm64 as a component of multicluster engine for Kubernetes 2.11; registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:8d69fe36725afd3ca0bf797ea434f7d77890627691aa6e43bc09065fe0825687_ppc64le as a component of multicluster engine for Kubernetes 2.11; registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:9bd4ebda1ac35bbbca4ad61e11b2805a9302edbdd5ca119fc459a63ebb3d0bb0_amd64 as a component of multicluster engine for Kubernetes 2.11; registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:a7c807d050f3189f7d35e53ba608220896439248f8d65bea873f45b98d0f5bdb_s390x as a component of multicluster engine for Kubernetes 2.11
    After
    Fixed: registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:31b448d2a414dfd39327dad7e554901e5afb5f86fc683be7efc49e802a5ad8f7_arm64 as a component of multicluster engine for Kubernetes 2.11.0; registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:8d69fe36725afd3ca0bf797ea434f7d77890627691aa6e43bc09065fe0825687_ppc64le as a component of multicluster engine for Kubernetes 2.11.0; registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:9bd4ebda1ac35bbbca4ad61e11b2805a9302edbdd5ca119fc459a63ebb3d0bb0_amd64 as a component of multicluster engine for Kubernetes 2.11.0; registry.redhat.io/multicluster-engine/hypershift-addon-rhel9-operator@sha256:a7c807d050f3189f7d35e53ba608220896439248f8d65bea873f45b98d0f5bdb_s390x as a component of multicluster engine for Kubernetes 2.11.0
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
Fixed release recorded from official guidance
Fixed release recorded from official guidance
ENISA EUVD · EUVD-2026-28422↗Red Hat Product Security security advisory↗Patch or update reference↗Vendor advisory↗CVE authority or vendor reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2026-39819 · cve.blacktree.nl