CVE-2026-47764 - pdm: Path traversal in wheel installation via overridden write_to_fs

CVE-2026-47764 - pdm: Path traversal in wheel installation via overridden write_to_fs

https://cvefeed.io/rssfeed/latest.atom / Tue, 08/04/2026 - 22:09
CVE ID :CVE-2026-47764
Published : Aug. 4, 2026, 5:57 p.m. | 58 minutes ago
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.
Severity: 0.0 | NA
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