Path traversal in setuptools - CVE-2025-47273
Published: May 27, 2025
Vulnerability identifier: #VU109840
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2025-47273
CWE-ID: CWE-22
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Python Packaging Authority
Affected software:
setuptools
setuptools
Detailed vulnerability description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to input validation error when processing directory traversal sequences in package_index.py. A remote attacker can trick the victim into installing a specially crafted script and overwrite arbitrary files on the system, leading to code execution.
How to mitigate CVE-2025-47273
Install updates from vendor's website.
Sources
- https://github.com/pypa/setuptools/blob/6ead555c5fb29bc57fe6105b1bffc163f56fd558/setuptools/package_index.py#L810C1-L825C88
- https://github.com/pypa/setuptools/commit/250a6d17978f9f6ac3ac887091f2d32886fbbb0b
- https://github.com/pypa/setuptools/issues/4946
- https://github.com/pypa/setuptools/security/advisories/GHSA-5rjg-fvgr-3xxf