CVE-2026-47764

UNKNOWN 0.0

pdm: Path traversal in wheel installation via overridden write_to_fs

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-22
Vendor	pdm-project
Product	pdm
Published	Aug 4, 2026

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Affected Versions

pdm-project / pdm

< 2.27.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

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