CVE-2026-29786

node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has been patched in version 7.5.10.

CVSS v3 6.3 MEDIUM

6.3^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 1.8 / Impact : 4.0

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/isaacs/node-tar/commit/7bc755dd85e623c0279e08eb3784909e6d7e4b9f	Patch
https://github.com/isaacs/node-tar/security/advisories/GHSA-qffp-2rhf-9h96	Exploit Vendor Advisory
https://access.redhat.com/security/cve/CVE-2026-29786
https://bugzilla.redhat.com/show_bug.cgi?id=2445476
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29786.json

Configurations

Configuration 1 (hide)

cpe:2.3:a:isaacs:tar:*:*:*:*:*:node.js:*:*

History

No history.

Information

Published : 2026-03-07 16:15

Updated : 2026-09-01 13:18

NVD link : CVE-2026-29786

Mitre link : CVE-2026-29786

CVE.ORG link : CVE-2026-29786

JSON object : View

Products Affected

isaacs

tar

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}, {"cpes": ["cpe:/a:redhat:trusted_artifact_signer:1"], "vendor": "Red Hat", "product": "Red Hat Trusted Artifact Signer", "packageName": "rhtas/rekor-search-ui-rhel9", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "defaultStatus": "unaffected"}]}], "published": "2026-03-07T16:15:55.587", "references": [{"url": "https://github.com/isaacs/node-tar/commit/7bc755dd85e623c0279e08eb3784909e6d7e4b9f", "tags": ["Patch"], "source": "security-advisories@github.com"}, {"url": "https://github.com/isaacs/node-tar/security/advisories/GHSA-qffp-2rhf-9h96", "tags": ["Exploit", "Vendor Advisory"], "source": "security-advisories@github.com"}, {"url": "https://access.redhat.com/security/cve/CVE-2026-29786", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2445476", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}, {"url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-29786.json", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security-advisories@github.com", "description": [{"lang": "en", "value": "CWE-22"}, {"lang": "en", "value": "CWE-59"}]}, {"type": "Secondary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-22"}]}, {"type": "Secondary", "source": "0b0ca135-0b70-47e7-9f44-1890c2a1c46c", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "node-tar is a full-featured Tar for Node.js. Prior to version 7.5.10, tar can be tricked into creating a hardlink that points outside the extraction directory by using a drive-relative link target such as C:../target.txt, which enables file overwrite outside cwd during normal tar.x() extraction. This issue has been patched in version 7.5.10."}, {"lang": "es", "value": "node-tar es una implementaci\u00f3n completa de Tar para Node.js. Antes de la versi\u00f3n 7.5.10, se puede enga\u00f1ar a tar para que cree un enlace duro que apunte fuera del directorio de extracci\u00f3n utilizando un destino de enlace relativo a la unidad, como C:../target.txt, lo que permite la sobrescritura de archivos fuera del directorio de trabajo actual (cwd) durante la extracci\u00f3n normal de tar.x(). Este problema ha sido parcheado en la versi\u00f3n 7.5.10."}], "lastModified": "2026-09-01T13:18:36.727", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:isaacs:tar:*:*:*:*:*:node.js:*:*", "vulnerable": true, "matchCriteriaId": "80531DF2-7BEB-4C48-97C6-0890BC635580", "versionEndExcluding": "7.5.10"}], "operator": "OR"}]}], "sourceIdentifier": "security-advisories@github.com"}