Path traversal in tar-fs

1) Path traversal

EUVDB-ID: #VU112157

Risk: High

CVSSv4.0: 6.6 [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/E:U/U:Amber]

CVE-ID: CVE-2025-48387

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to an issue where an extract can write outside the specified dir with a specific tarball. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

tar-fs: 1.8.1 - 3.1.0

CPE2.3

• cpe:2.3:a:mafintosh:tar-fs:*:*:*:*:*:*:*:*
• cpe:2.3:a:mafintosh:tar-fs:1.11.1:*:*:*:*:*:*:*
• cpe:2.3:a:mafintosh:tar-fs:1.12.0:*:*:*:*:*:*:*
• cpe:2.3:a:mafintosh:tar-fs:1.13.0:*:*:*:*:*:*:*
• cpe:2.3:a:mafintosh:tar-fs:1.13.1:*:*:*:*:*:*:*
• cpe:2.3:a:mafintosh:tar-fs:1.13.2:*:*:*:*:*:*:*
• cpe:2.3:a:mafintosh:tar-fs:1.14.0:*:*:*:*:*:*:*

External links

https://github.com/mafintosh/tar-fs/commit/647447b572bc135c41035e82ca7b894f02b17f0f
https://github.com/mafintosh/tar-fs/security/advisories/GHSA-8cj5-5rvv-wf4v

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.