VDB
CVE-2026-47764
CVE-2026-47764
PUBLISHED
CVSS 8.4 HIGH
Reported by GitHub_M · Published August 4, 2026
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.
Risk Scores
CVSS 4.0
8.4
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| pdm-project | pdm | < 2.27.0 |
| PyPI | pdm | 0 |
| pdm-project | pdm | < 2.27.0 |
Timeline
- Jun 10, 2026 CVE Published
- Jun 12, 2026 Security Advisory
- Aug 5, 2026 CVE Updated
- Aug 7, 2026 EPSS Score
- Aug 24, 2026 EPSS Score
References
- https://github.com/pdm-project/pdm/security/advisories/GHSA-78v8-vpjp-cjqh x_refsource_CONFIRM
- https://github.com/pdm-project/pdm/releases/tag/2.27.0 x_refsource_MISC
- https://github.com/pdm-project/pdm/pull/3787 fix
- https://nvd.nist.gov/vuln/detail/CVE-2026-47764 advisory
- https://github.com/advisories/GHSA-78v8-vpjp-cjqh advisory