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From: Salvatore Bonaccorso <carnil@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: node-tar: CVE-2026-26960
Message-ID: <177238151705.1120957.7938906944248304333.reportbug@eldamar.lan>
X-Mailer: reportbug 13.2.0
Date: Sun, 01 Mar 2026 17:11:57 +0100
Delivered-To: submit@bugs.debian.org

Source: node-tar
Version: 6.2.1+ds1+~cs6.1.13-7
Severity: important
Tags: security upstream
X-Debbugs-Cc: carnil@debian.org, Debian Security Team <team@security.debian.org>

Hi,

The following vulnerability was published for node-tar.

CVE-2026-26960[0]:
| node-tar is a full-featured Tar for Node.js. When using default
| options in versions 7.5.7 and below, an attacker-controlled archive
| can create a hardlink inside the extraction directory that points to
| a file outside the extraction root, enabling arbitrary file read and
| write as the extracting user. Severity is high because the primitive
| bypasses path protections and turns archive extraction into a direct
| filesystem access primitive. This issue has been fixed in version
| 7.5.8.

Note, I was not exacly able to reproduce/verify the issue completely,
but still should apply to all versions before 7.5.8.

If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2026-26960
    https://www.cve.org/CVERecord?id=CVE-2026-26960
[1] https://github.com/isaacs/node-tar/security/advisories/GHSA-83g3-92jg-28cx

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore
]