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Full vulnerability report · 2026
CVE-2026-32289High confidence

JsBraceDepth Context Tracking Bugs (XSS) in html/template

Go standard library · html/template

6.1MediumCVSS 3.1
Recommended action
Scheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
Distribution package intelligence

Ubuntu vendor package status

Canonical’s release and source-package findings are shown separately from local repository availability.

4 package states
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.

Ubuntu releaseSource packageVendor stateFixed versionEvidence
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 record ↗Source updated 9 Sept 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 record ↗Source updated 9 Sept 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 record ↗Source updated 9 Sept 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 record ↗Source updated 9 Sept 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-2026-32289 · CSAF 2.0 · revision 3 · finalRed Hat Product Securityhtml/template: golang: html/template: Cross-Site Scripting (XSS) via improper context and brace depth tracking in JS template literals
354 known affected

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

  • redhat-user-workloads/appliance as a component of Assisted Installer for Red Hat OpenShift Container Platform 2
  • redhat-user-workloads/openshift-builds-waiter-1-6 as a component of Builds for Red Hat OpenShift
  • redhat-user-workloads/openshift-builds-waiter-1-7 as a component of Builds for Red Hat OpenShift
  • redhat-user-workloads/jetstack-cert-manager-1-17 as a component of cert-manager Operator for Red Hat OpenShift
  • redhat-user-workloads/jetstack-cert-manager-1-18 as a component of cert-manager Operator for Red Hat OpenShift
  • redhat-user-workloads/compliance-operator-bundle-release as a component of Compliance Operator
  • redhat-user-workloads/osc-caa as a component of Confidential Compute Attestation
  • redhat-user-workloads/trustee-operator as a component of Confidential Compute Attestation
  • cryostat/cryostat-storage-rhel9 as a component of Cryostat 4
  • redhat-user-workloads/keda-adapter as a component of Custom Metric Autoscaler operator for Red Hat Openshift
  • redhat-user-workloads/deployment-validation-operator as a component of Deployment Validation Operator
  • external-secrets-operator/external-secrets-rhel9 as a component of External Secrets Operator for Red Hat OpenShift
Summary
A flaw was found in the `html/template` package. This vulnerability arises from improper tracking of context and brace depth within JavaScript (JS) template literals. A remote attacker could exploit these issues to cause content to be incorrectly or improperly escaped, leading to Cross-Site Scripting (XSS) vulnerabilities. This could allow an attacker to inject malicious scripts into web pages viewed by other users.
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.

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2026-20018

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 actionScheduled

Medium technical severity with no CISA KEV confirmation; remediate through the normal risk-based patch cycle unless local exposure raises the priority.

Patch available
01

What, why and how

Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content when branches were used. Additionally template actions within JS template literals did not properly track the brace depth, leading to incorrect escaping being applied. These issues could cause actions within JS template literals to be incorrectly or improperly escaped, leading to XSS vulnerabilities.

What

Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content when branches were used. Additionally template actions within JS template literals did not properly track the brace depth, leading to incorrect escaping being applied. These issues could cause actions within JS template literals to be incorrectly or improperly escaped, leading to XSS vulnerabilities.

Why

Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content when branches were used. Additionally template actions within JS template literals did not properly track the brace depth, leading to incorrect escaping being applied. These issues could cause actions within JS template literals to be incorrectly or improperly escaped, leading to XSS vulnerabilities.

Why

Attacker-controlled content can reach a browser as executable script without sufficient output encoding or sanitisation.

How

An attacker operating through a network path may attempt exploitation without authentication after a user interaction. 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
a network path → Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
Required interaction required
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Changed: exploitation can affect a different security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-79 ↗

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting'). The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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

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

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UIRequiredUser interaction: Another user must perform an action for exploitation to succeed.SChangedScope: The attack can affect a component governed by a different security authority.CLowConfidentiality impact: A successful attack can cause a limited loss.ILowIntegrity impact: A successful attack can cause a limited loss.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-79
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2026-1006Golang Go: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Golang Go ausnutzen, um Speicherbeschädigungen zu verursachen, beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand auszulösen oder andere, nicht näher spezifizierte Angriffe durchzuführen.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0627Multiples vulnérabilités dans les produits Splunk

rd?id=CVE-2026-3063 Référence CVE CVE-2026-31789 https://www.cve.org/CVERecord?id=CVE-2026-31789 Référence CVE CVE-2026-31790 https://www.cve.org/CVERecord?id=CVE-2026-31790 Référence CVE CVE-2026-32141 https://www.cve.org/CVERecord?id=CVE-2026-32141 Référence CVE CVE-2026-32280 https://www.cve.org/CVERecord?id=CVE-2026-32280 Référence CVE CVE-2026-32281 https://www.cve.org/CVERecord?id=CVE-2026-32281 Référence CVE CVE-2026-32282 https://www.cve.org/CVERecord?id=CVE-2026-32282 Référence CVE CVE-2026-32283 https://www.cve.org/CVERecord?id=CVE-2026-32283 Référence CVE CVE-2026-32288 https://www.cve.org/CVERecord?id=CVE-2026-32288 Référence CVE CVE-2026-32289 https://www.cve.org/CVERecord?id=CVE-2026-32289 Référence CVE CVE-2026-32776 https://www.cve.org/CVERecord?id=CVE-2026-32776 Référence CVE CVE-2026-32777 https://www.cve.org/CVERecord?id=CVE-2026-32777 Référence CVE CVE-2026-32778 https://www.cve.org/CVERecord?id=CVE-2026-32778 Référence CVE CVE-2026-33055 https://www.cve.org/CVERecord?id=CVE-2026-33055 Référence CVE CVE-2026-33056 https://www.cve.org/CVERecord?id=CVE-2026-33056 Référence CVE CVE-2026-33186 https://www.cve.org/CVERecord?id=CVE-2026-33186 Référence CVE CVE-2026-33228 https://www.cve.org/CVERecord?id=CVE-2026-33228 Référence CVE CVE-2026-33810 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0556Multiples vulnérabilités dans les produits VMware

ord?id=CVE-2026-30922 Référence CVE CVE-2026-3219 https://www.cve.org/CVERecord?id=CVE-2026-3219 Référence CVE CVE-2026-32274 https://www.cve.org/CVERecord?id=CVE-2026-32274 Référence CVE CVE-2026-32280 https://www.cve.org/CVERecord?id=CVE-2026-32280 Référence CVE CVE-2026-32281 https://www.cve.org/CVERecord?id=CVE-2026-32281 Référence CVE CVE-2026-32282 https://www.cve.org/CVERecord?id=CVE-2026-32282 Référence CVE CVE-2026-32283 https://www.cve.org/CVERecord?id=CVE-2026-32283 Référence CVE CVE-2026-32286 https://www.cve.org/CVERecord?id=CVE-2026-32286 Référence CVE CVE-2026-32288 https://www.cve.org/CVERecord?id=CVE-2026-32288 Référence CVE CVE-2026-32289 https://www.cve.org/CVERecord?id=CVE-2026-32289 Référence CVE CVE-2026-32874 https://www.cve.org/CVERecord?id=CVE-2026-32874 Référence CVE CVE-2026-32875 https://www.cve.org/CVERecord?id=CVE-2026-32875 Référence CVE CVE-2026-3298 https://www.cve.org/CVERecord?id=CVE-2026-3298 Référence CVE CVE-2026-32990 https://www.cve.org/CVERecord?id=CVE-2026-32990 Référence CVE CVE-2026-33186 https://www.cve.org/CVERecord?id=CVE-2026-33186 Référence CVE CVE-2026-33230 https://www.cve.org/CVERecord?id=CVE-2026-33230 Référence CVE CVE-2026-33231 https://www.cve.org/CVERecord?id=CVE-2026-33231 Référence CVE CVE-2026-33236 https://www.cve.org/CVERecord?id=CV

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0540Multiples vulnérabilités dans VMware Tanzu Gemfire

De multiples vulnérabilités ont été découvertes dans VMware Tanzu Gemfire. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.

Official advisory
CERT-FR · French · CERTFR-2026-AVI-0498Multiples vulnérabilités dans Zabbix Agent2

De multiples vulnérabilités ont été découvertes dans Zabbix Agent2. Elles permettent à un attaquant de provoquer un problème de sécurité non spécifié par l'éditeur.

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.
Patch available
Affected
redhat-user-workloads/appliance as a component of Assisted Installer for Red Hat OpenShift Container Platform 2; redhat-user-workloads/openshift-builds-waiter-1-6 as a component of Builds for Red Hat OpenShift; redhat-user-workloads/openshift-builds-waiter-1-7 as a component of Builds for Red Hat OpenShift; redhat-user-workloads/jetstack-cert-manager-1-17 as a component of cert-manager Operator for Red Hat OpenShift; redhat-user-workloads/jetstack-cert-manager-1-18 as a component of cert-manager Operator for Red Hat OpenShift; redhat-user-workloads/compliance-operator-bundle-release as a component of Compliance Operator; redhat-user-workloads/osc-caa as a component of Confidential Compute Attestation; redhat-user-workloads/trustee-operator as a component of Confidential Compute Attestation; cryostat/cryostat-storage-rhel9 as a component of Cryostat 4; redhat-user-workloads/keda-adapter as a component of Custom Metric Autoscaler operator for Red Hat Openshift; redhat-user-workloads/deployment-validation-operator as a component of Deployment Validation Operator; external-secrets-operator/external-secrets-rhel9 as a component of External Secrets Operator for Red Hat OpenShift; edo/external-dns-rhel8 as a component of ExternalDNS Operator; edo/external-dns-rhel9 as a component of ExternalDNS Operator; redhat-user-workloads/file-integrity-operator-release as a component of File Integrity Operator; redhat-user-workloads/gatekeeper-operator-3-18 as a component of Gatekeeper 3; redhat-user-workloads/gatekeeper-operator-3-20 as a component of Gatekeeper 3; redhat-user-workloads/art-images as a component of Logging Subsystem for Red Hat OpenShift; redhat-user-workloads/logging-loki-v6-0 as a component of Logging Subsystem for Red Hat OpenShift; redhat-user-workloads/logging-loki-v6-2 as a component of Logging Subsystem for Red Hat OpenShift; redhat-user-workloads/logging-loki-v6-4 as a component of Logging Subsystem for Red Hat OpenShift; lvms4/topolvm-rhel8 as a component of Logical Volume Manager Storage; lvms4/topolvm-rhel9 as a component of Logical Volume Manager Storage; redhat-user-workloads/lvm-operator as a component of Logical Volume Manager Storage; mta/mta-cli-rhel9 as a component of Migration Toolkit for Applications 8; redhat-user-workloads/art-images as a component of Migration Toolkit for Applications 8; redhat-user-workloads/art-images as a component of Migration Toolkit for Containers; redhat-user-workloads/multiarch-tuning-operator-v1-x as a component of Multiarch Tuning Operator; redhat-user-workloads/kube-rbac-proxy-mce-210 as a component of Multicluster Engine for Kubernetes; redhat-user-workloads/kube-rbac-proxy-mce-211 as a component of Multicluster Engine for Kubernetes; and 324 more
Fixed
go-toolset-0:1.26.2-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); go-toolset-0:1.26.2-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); go-toolset-0:1.26.2-1.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); go-toolset-0:1.26.2-1.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-0:1.26.2-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-0:1.26.2-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-0:1.26.2-1.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-0:1.26.2-1.el9_8.src as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-0:1.26.2-1.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-bin-0:1.26.2-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-bin-0:1.26.2-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-bin-0:1.26.2-1.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-bin-0:1.26.2-1.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-docs-0:1.26.2-1.el9_8.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-misc-0:1.26.2-1.el9_8.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-race-0:1.26.2-1.el9_8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-race-0:1.26.2-1.el9_8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-race-0:1.26.2-1.el9_8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-race-0:1.26.2-1.el9_8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-src-0:1.26.2-1.el9_8.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9); golang-tests-0:1.26.2-1.el9_8.noarch as a component of Red Hat Enterprise Linux AppStream (v. 9); golang1-25-main@aarch64 as a component of Red Hat Hardened Images; golang1-25-main@noarch as a component of Red Hat Hardened Images; golang1-25-main@src as a component of Red Hat Hardened Images; golang1-25-main@x86_64 as a component of Red Hat Hardened Images; golang1-26-main@aarch64 as a component of Red Hat Hardened Images; golang1-26-main@noarch as a component of Red Hat Hardened Images; golang1-26-main@src as a component of Red Hat Hardened Images; golang1-26-main@x86_64 as a component of Red Hat Hardened Images
Action
For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 8 Apr 2026 · Last source change 13 Apr 2026, 18:20 UTC · CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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-2026-20018
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 →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2026-20018↗Vendor CSAF · Red Hat Product Security↗CVE authority or vendor reference↗Vendor advisory↗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-2026-32289 · cve.blacktree.nl