High severityNVD Advisory· Published Jun 10, 2026· Updated Jun 10, 2026
PDM wheel installation leads to Path Traversal via overridden write_to_fs
CVE-2026-47764
Description
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. Same class as Poetry CVE-2026-34591. Fix ready at: https://github.com/pdm-project/pdm/pull/3787.
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Affected packages
Versions sourced from the GitHub Security Advisory.
| Package | Affected versions | Patched versions |
|---|---|---|
pdmPyPI | < 2.27.0 | 2.27.0 |
Affected products
3- ghsa-coords2 versions
< 2.27.0+ 1 more
- (no CPE)range: < 2.27.0
- (no CPE)range: < 2.28.0-1.1
Patches
Vulnerability mechanics
References
4News mentions
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