CVE-2025-59343 HIGH

CVE-2025-59343: tar-fs has a symlink validation bypass if destination directory is predictable with a specific tarball

Vendor Mafintosh
Product tar-fs
Weakness CWE-22 · Path traversal
Published September 24, 2025
Last update November 3, 2025
View on NVD All CVEs

CVSS base score

8.7/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality —
Integrity —

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

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

September 24, 2025 CVE published
November 3, 2025 Record updated