CVE-2025-8869

Aliases:GHSA-4xh5-x5gv-qwphBIT-pip-2025-8869
Advisory lineage Upstream: 0 Downstream: 4
Deferred
Published: 24 Sept 2025, 14:56
Last modified:03 Nov 2025, 17:45

Vulnerability Summary

Overall Risk (default)
low
24/100
CVSS Score
5.9 MEDIUM
v4.0 (cve.org)
EPSS Score
0.02% LOW
0% probability 0.00%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

24 Sept 2025, 14:56
Published
Vulnerability first disclosed
03 Nov 2025, 17:45
Last Modified
Vulnerability information updated

Description

When extracting a tar archive pip may not check symbolic links point into the extraction directory if the tarfile module doesn't implement PEP 706. Note that upgrading pip to a "fixed" version for this vulnerability doesn't fix all known vulnerabilities that are remediated by using a Python version that implements PEP 706. Note that this is a vulnerability in pip's fallback implementation of tar extraction for Python versions that don't implement PEP 706 and therefore are not secure to all vulnerabilities in the Python 'tarfile' module. If you're using a Python version that implements PEP 706 then pip doesn't use the "vulnerable" fallback code. Mitigations include upgrading to a version of pip that includes the fix, upgrading to a Python version that implements PEP 706 (Python >=3.9.17, >=3.10.12, >=3.11.4, or >=3.12), applying the linked patch, or inspecting source distributions (sdists) before installation as is already a best-practice.

CVSS Metrics

  • v4.0•MEDIUM•Score: 5.9CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
  • v4.0•MEDIUM•Score: 5.9CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Trends

Current EPSS score: 0.02%• Percentile: 7%

Affected Systems

  • PyPI•pip

    < 25.3

  • python packaging authority•pip

    < 25.3

References (8)