CVE-2025-59343

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

State: Published
Severity: 8.7 High
Published: Sep 24, 2025
Updated: Nov 3, 2025
Reserved: Sep 12, 2025

Description

tar-fs provides filesystem bindings for tar-stream. Versions prior to 3.1.1, 2.1.3, and 1.16.5 are vulnerable to symlink validation bypass if the destination directory is predictable with a specific tarball. This issue has been patched in version 3.1.1, 2.1.4, and 1.16.6. A workaround involves using the ignore option on non files/directories.

Scores

CVSS	Score	Vector	Source
4.0	8.7 High	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	GitHub_M

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-61 UNIX Symbolic Link (Symlink) Following

Affected Products

Product	Versions
tar-fsmafintosh	>= 3.0.0, < 3.1.1Affected >= 2.0.0, < 2.1.3Affected < 1.16.5Affected

References

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