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Full vulnerability report · 2026
CVE-2026-59871High confidence

node-tar: Process crash via PAX numeric path type confusion

isaacs · node-tar

Official source article: GitHub GHSA-W8WR-V893-VJVP ↗. Check the applicable product and release in the original source.

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

Medium technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 163 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:High, raised one band.upgradedsince 8 Jul 2026

Evidence used

  • No CISA KEV confirmation is currently recorded.
  • A structured source references public exploit or proof-of-concept material.
  • The selected CVSS metric records a network-reachable, unauthenticated path with no user interaction.
  • EPSS is 0.64% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict the affected network interface to trusted sources where business-safe.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs isaacs node-tar 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: Within 30 daysRemediation target: Within 180 days

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 163 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

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

5 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
Debian trixietrixie · sourcenode-tarAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 6 Oct 2026
Debian bookwormbookworm · sourcenode-tarAffected, no fix publishedDebian currently tracks this release as open.Not published in this feedDebian Security Tracker ↗Source updated 6 Oct 2026
Debian forkyforky · sourcenode-tarVendor fix publishedDebian records a fixed source-package version for this release.7.5.19+~4.0.1-1Debian Security Tracker ↗Source updated 6 Oct 2026
Debian sidsid · sourcenode-tarVendor fix publishedDebian records a fixed source-package version for this release.7.5.19+~4.0.1-1Debian Security Tracker ↗Source updated 6 Oct 2026
Ubuntu 24.04 LTSnoble · standard archivenode-tarUnder 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 ranges2 source-attributed ranges

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
npmtar<= 7.5.177.5.18GitHub advisory ↗upstream repository advisory · 20 Jul 2026
npmtarSEMVER: introduced 0; fixed 7.5.187.5.18OSV record ↗aggregator derived · 10 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-2026-59871 · CSAF 2.0 · revision 3 · finalRed Hat Product Securitynode-tar: node-tar: Denial of Service due to incorrect PAX path handling
161 known affected

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

  • openshift-sandboxed-containers/osc-pccs as a component of Confidential Compute Attestation
  • cryostat-openshift-console-plugin-npm as a component of Cryostat 4
  • grafana-infinity-datasource-npm as a component of Cryostat 4
  • tar as a component of Cryostat 4
  • exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 as a component of Exploit Intelligence
  • rhmtc/openshift-migration-ui-rhel8 as a component of Migration Toolkit for Containers
  • workload-availability/node-healthcheck-must-gather-rhel9 as a component of Node HealthCheck Operator
  • workload-availability/node-healthcheck-operator-bundle as a component of Node HealthCheck Operator
  • workload-availability/node-healthcheck-rhel9-operator as a component of Node HealthCheck Operator
  • openshift-pipelines/pipelines-console-plugin-pf5-rhel9 as a component of OpenShift Pipelines
  • openshift-pipelines/pipelines-console-plugin-rhel8 as a component of OpenShift Pipelines
  • openshift-pipelines/pipelines-console-plugin-rhel9 as a component of OpenShift Pipelines
Summary
A flaw was found in node-tar, a library for manipulating tar archives in Node.js. This vulnerability occurs when the library incorrectly converts specific archive path values into numbers, leading to an error during subsequent path processing. An attacker could exploit this to cause the application using node-tar to crash, resulting in a denial of service.
Remediation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
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-2026-42308

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 public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance. Verified remediation exists for at least one product or source, but 163 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

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, node-tar coerces all-digit PAX path and linkpath values in src/pax.ts to JavaScript numbers, causing downstream path handling such as normalizeWindowsPath(entry.path).split('/') to throw an uncaught TypeError. This issue is fixed in version 7.5.18.

What

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, node-tar coerces all-digit PAX path and linkpath values in src/pax.ts to JavaScript numbers, causing downstream path handling such as normalizeWindowsPath(entry.path).split('/') to throw an uncaught TypeError. This issue is fixed in version 7.5.18.

Why

The product does not correctly convert an object, resource, or structure from one type to a different type.

How

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

What

node-tar is a tar archive manipulation library for Node.js. Prior to 7.5.18, node-tar coerces all-digit PAX path and linkpath values in src/pax.ts to JavaScript numbers, causing downstream path handling such as normalizeWindowsPath(entry.path).split('/') to throw an uncaught TypeError. This issue is fixed in version 7.5.18.

Why

The product does not correctly convert an object, resource, or structure from one type to a different type.

How

An attacker operating through a network path may attempt exploitation without authentication or 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.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
a network path → Incorrect Type Conversion or Cast → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
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-704 ↗

CWE-704: Incorrect Type Conversion or Cast. The product does not correctly convert an object, resource, or structure from one type to a different type.

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:N/S:U/C:N/I:N/A:L

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.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CNoneConfidentiality impact: No direct loss is represented by this metric.INoneIntegrity impact: No direct loss is represented by this metric.ALowAvailability impact: A successful attack can cause a limited loss.
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-704Public exploit reference
A

Official authority intelligence

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

BSI · German · WID-SEC-2026-3621IBM App Connect Enterprise: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in IBM App Connect Enterprise ausnutzen, um Informationen offenzulegen, um einen Denial of Service Angriff durchzuführen, um Daten zu manipulieren und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
BSI · German · WID-SEC-2026-2923Atlassian Produkte (Bamboo, Bitbucket, Confluence, Crucible, Fisheye, und Jira): Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Atlassian Bamboo, Atlassian Bitbucket, Atlassian Confluence, Atlassian Crucible, Atlassian Fisheye und Atlassian Jira ausnutzen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um einen Cross-Site Scripting Angriff durchzuführen, um einen SQL-Injection Angriff durchzuführen, und um Sicherheitsvorkehrungen zu umgehen.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-1256Multiples vulnérabilités dans les produits IBM

d?id=CVE-2026-59652 Référence CVE CVE-2026-59843 https://www.cve.org/CVERecord?id=CVE-2026-59843 Référence CVE CVE-2026-59844 https://www.cve.org/CVERecord?id=CVE-2026-59844 Référence CVE CVE-2026-59845 https://www.cve.org/CVERecord?id=CVE-2026-59845 Référence CVE CVE-2026-59846 https://www.cve.org/CVERecord?id=CVE-2026-59846 Référence CVE CVE-2026-59847 https://www.cve.org/CVERecord?id=CVE-2026-59847 Référence CVE CVE-2026-59848 https://www.cve.org/CVERecord?id=CVE-2026-59848 Référence CVE CVE-2026-59850 https://www.cve.org/CVERecord?id=CVE-2026-59850 Référence CVE CVE-2026-59869 https://www.cve.org/CVERecord?id=CVE-2026-59869 Référence CVE CVE-2026-59871 https://www.cve.org/CVERecord?id=CVE-2026-59871 Référence CVE CVE-2026-59873 https://www.cve.org/CVERecord?id=CVE-2026-59873 Référence CVE CVE-2026-59874 https://www.cve.org/CVERecord?id=CVE-2026-59874 Référence CVE CVE-2026-59875 https://www.cve.org/CVERecord?id=CVE-2026-59875 Référence CVE CVE-2026-59878 https://www.cve.org/CVERecord?id=CVE-2026-59878 Référence CVE CVE-2026-59879 https://www.cve.org/CVERecord?id=CVE-2026-59879 Référence CVE CVE-2026-59880 https://www.cve.org/CVERecord?id=CVE-2026-59880 Référence CVE CVE-2026-59887 https://www.cve.org/CVERecord?id=CVE-2026-59887 Référence CVE CVE-2026-59888 https://www.cve.org/CVERecord?id=

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0958Multiples vulnérabilités dans les produits IBM

CVERecord?id=CVE-2026-54903 Référence CVE CVE-2026-54904 https://www.cve.org/CVERecord?id=CVE-2026-54904 Référence CVE CVE-2026-54905 https://www.cve.org/CVERecord?id=CVE-2026-54905 Référence CVE CVE-2026-54906 https://www.cve.org/CVERecord?id=CVE-2026-54906 Référence CVE CVE-2026-5588 https://www.cve.org/CVERecord?id=CVE-2026-5588 Référence CVE CVE-2026-5598 https://www.cve.org/CVERecord?id=CVE-2026-5598 Référence CVE CVE-2026-5758 https://www.cve.org/CVERecord?id=CVE-2026-5758 Référence CVE CVE-2026-5795 https://www.cve.org/CVERecord?id=CVE-2026-5795 Référence CVE CVE-2026-59869 https://www.cve.org/CVERecord?id=CVE-2026-59869 Référence CVE CVE-2026-59871 https://www.cve.org/CVERecord?id=CVE-2026-59871 Référence CVE CVE-2026-59873 https://www.cve.org/CVERecord?id=CVE-2026-59873 Référence CVE CVE-2026-59874 https://www.cve.org/CVERecord?id=CVE-2026-59874 Référence CVE CVE-2026-59875 https://www.cve.org/CVERecord?id=CVE-2026-59875 Référence CVE CVE-2026-6009 https://www.cve.org/CVERecord?id=CVE-2026-6009 Référence CVE CVE-2026-6100 https://www.cve.org/CVERecord?id=CVE-2026-6100 Référence CVE CVE-2026-6357 https://www.cve.org/CVERecord?id=CVE-2026-6357 Référence CVE CVE-2026-7769 https://www.cve.org/CVERecord?id=CVE-2026-7769 Référence CVE CVE-2026-8149 https://www.cve.org/CVERecord?id=CVE-2026-

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2026-023249isaacsのnode-tarにおける不正な型変換に関する脆弱性

node-tarはNode.js用のtarアーカイブ操作ライブラリです。7.5.18以前のバージョンでは、node-tarはsrc/pax.ts内の全て数字のみで構成されたPAXパスとlinkpathの値をJavaScriptの数値に強制変換しており、そのためnormalizeWindowsPath(entry.path).split('/')のような下流のパス処理でキャッチされないTypeErrorが発生していました。この問題はバージョン7.5.18で修正されました。

Official advisory ↗
NCSC-NL · Dutch · NCSC-2026-0325Kwetsbaarheden verholpen in Atlassian producten

node-tar versions prior to 7.5.18 contain a vulnerability where all-digit PAX path and linkpath values are incorrectly converted to numbers, causing uncaught TypeErrors and denial of service during archive extraction.

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
Fixed
7.5.18.
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
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.
Official vendor articles1 stored document

Linked articles are downloaded and versioned as source evidence. A CVE mention or approved update relationship does not, by itself, verify a fix for every product branch.

04

Evidence and provenance

Published 8 Jul 2026 · Last source change 8 Jul 2026, 16:13 UTC · CWE-704 · Incorrect Type Conversion or Cast

CVE recordCVE.org · 5.2
CVSS sourceCNA
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-2026-42308
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
    openshift-sandboxed-containers/osc-pccs as a component of Confidential Compute Attestation; cryostat-openshift-console-plugin-npm as a component of Cryostat 4; grafana-infinity-datasource-npm as a component of Cryostat 4; tar as a component of Cryostat 4; exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 as a component of Exploit Intelligence; rhmtc/openshift-migration-ui-rhel8 as a component of Migration Toolkit for Containers; workload-availability/node-healthcheck-must-gather-rhel9 as a component of Node HealthCheck Operator; workload-availability/node-healthcheck-operator-bundle as a component of Node HealthCheck Operator; workload-availability/node-healthcheck-rhel9-operator as a component of Node HealthCheck Operator; openshift-pipelines/pipelines-console-plugin-pf5-rhel9 as a component of OpenShift Pipelines; openshift-pipelines/pipelines-console-plugin-rhel8 as a component of OpenShift Pipelines; openshift-pipelines/pipelines-console-plugin-rhel9 as a component of OpenShift Pipelines; openshift-service-mesh/kiali-ossmc-rhel9 as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-rhel9 as a component of OpenShift Service Mesh 3; 3scale-amp2/system-rhel7 as a component of Red Hat 3scale API Management Platform 2; 3scale-amp2/system-rhel8 as a component of Red Hat 3scale API Management Platform 2; 3scale-amp2/system-rhel9 as a component of Red Hat 3scale API Management Platform 2; 3scale-amp21/system as a component of Red Hat 3scale API Management Platform 2; 3scale-amp22/system as a component of Red Hat 3scale API Management Platform 2; rhacm2/volsync-operator-bundle as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; tar as a component of Red Hat AMQ Broker 7; tar as a component of Red Hat build of Apache Camel - HawtIO 4; tar as a component of Red Hat build of Apache Camel for Spring Boot 4; rh-podman-desktop.git as a component of Red Hat Build of Podman Desktop; rhcl-1/rhcl-console-plugin-rhel9 as a component of Red Hat Connectivity Link 1; rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub; linux-sgx.src as a component of Red Hat Enterprise Linux 10; nodejs as a component of Red Hat Enterprise Linux 10; nodejs-devel as a component of Red Hat Enterprise Linux 10; and 130 more
    After
    openshift-sandboxed-containers/osc-pccs as a component of Confidential Compute Attestation; cryostat-openshift-console-plugin-npm as a component of Cryostat 4; grafana-infinity-datasource-npm as a component of Cryostat 4; tar as a component of Cryostat 4; exploit-intelligence-tech-preview/vulnerability-analysis-rhel9 as a component of Exploit Intelligence; rhmtc/openshift-migration-ui-rhel8 as a component of Migration Toolkit for Containers; workload-availability/node-healthcheck-must-gather-rhel9 as a component of Node HealthCheck Operator; workload-availability/node-healthcheck-operator-bundle as a component of Node HealthCheck Operator; workload-availability/node-healthcheck-rhel9-operator as a component of Node HealthCheck Operator; openshift-pipelines/pipelines-console-plugin-pf5-rhel9 as a component of OpenShift Pipelines; openshift-pipelines/pipelines-console-plugin-rhel8 as a component of OpenShift Pipelines; openshift-pipelines/pipelines-console-plugin-rhel9 as a component of OpenShift Pipelines; openshift-service-mesh/kiali-ossmc-rhel9 as a component of OpenShift Service Mesh 3; openshift-service-mesh/kiali-rhel9 as a component of OpenShift Service Mesh 3; 3scale-amp2/system-rhel7 as a component of Red Hat 3scale API Management Platform 2; 3scale-amp2/system-rhel8 as a component of Red Hat 3scale API Management Platform 2; 3scale-amp2/system-rhel9 as a component of Red Hat 3scale API Management Platform 2; 3scale-amp21/system as a component of Red Hat 3scale API Management Platform 2; 3scale-amp22/system as a component of Red Hat 3scale API Management Platform 2; rhacm2/volsync-operator-bundle as a component of Red Hat Advanced Cluster Management for Kubernetes 2; rhacm2/volsync-rhel9 as a component of Red Hat Advanced Cluster Management for Kubernetes 2; tar as a component of Red Hat AMQ Broker 7; tar as a component of Red Hat build of Apache Camel - HawtIO 4; tar as a component of Red Hat build of Apache Camel for Spring Boot 4; rh-podman-desktop.git as a component of Red Hat Build of Podman Desktop; rhcl-1/rhcl-console-plugin-rhel9 as a component of Red Hat Connectivity Link 1; rhdh/rhdh-hub-rhel9 as a component of Red Hat Developer Hub; linux-sgx.src as a component of Red Hat Enterprise Linux 10; nodejs as a component of Red Hat Enterprise Linux 10; nodejs-devel as a component of Red Hat Enterprise Linux 10; and 131 more
    Red Hat Product Security ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
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-2026-59871 · cve.blacktree.nl