Directory Traversal Affecting pdm package, versions <2.27.0-1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published5 Aug 2026
- disclosed4 Aug 2026
Introduced: 4 Aug 2026
CVE-2026-47764 (opens in a new tab)How to fix?
Upgrade Debian:unstable pdm to version 2.27.0-1 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream pdm package and not the pdm package as distributed by Debian.
See How to fix? for Debian:unstable relevant fixed versions and status.
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.