GitHub Advisoryadvisory · npm

GHSA-vj76-c3g6-qr5v tar-fs has a symlink validation bypass if destination directory is predictable with a specific tarball

HIGH Published 2025-09-24 Modified 2025-11-03 Official page ↗
Aliases
CVE-2025-59343
Ecosystem
npm
Packages
tar-fs
Severity
High
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Weaknesses
CWE-22, CWE-61
Reviewed
2025-09-24

Affected packages

• npm tar-fs: >= 3.0.0, < 3.1.1 → fixed in 3.1.1 • npm tar-fs: >= 2.0.0, < 2.1.4 → fixed in 2.1.4 • npm tar-fs: < 1.16.6 → fixed in 1.16.6

Description

Impact v3.1.0, v2.1.3, v1.16.5 and below Patches Has been patched in 3.1.1, 2.1.4, and 1.16.6 Workarounds You can use the ignore option to ignore non files/directories. ```js ignore (_, header) { // pass files & directories, ignore e.g. symlinks return header.type !== 'file' && header.type !== 'directory' } ``` Credit Reported by: Mapta / BugBunny_ai

Related

Alias · CVE (1)

  • CVE-2025-59343 tar-fs provides filesystem bindings for tar-stream. vulnerability

Weakness · CWE (2)

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
  • CWE-61 UNIX Symbolic Link (Symlink) Following weakness

References