HIGH

CVE-2026-47764

2026-08-04 CVSS v4.0

CVSS

8.4

Description

pdm is a Python package and dependency manager supporting the latest PEP standards. Versions prior to 2.27.0 are vulnerable to path traversal through write_to_fs. InstallDestination.write_to_fs() in src/pdm/installers/installers.py overrides the base class to add symlink/hardlink support but replaces the safe _path_with_destdir() (which validates via Path.resolve() + is_relative_to()) with a bare os.path.join() that performs no path validation. A malicious wheel with traversal entries can write arbitrary files. This issue has been fixed in version 2.27.0.

Weakness (CWE)

CWE-22 Path Traversal

EPSS Score

0.15%

Probability of exploitation in next 30 days

4.4th percentile

References

https://github.com/pdm-project/pdm/releases/tag/2.27.0 https://github.com/pdm-project/pdm/security/advisories/GHSA-78v8-vpjp-cjqh

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Base CVE data derived from NVD (public domain). Enrichment by dbcve.org (CC-BY-4.0). Fetched via API.

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