PYSEC-2026-2861 PDM wheel installation leads to Path Traversal via overridden write_to_fs

InstallDestination.writetofs in src/pdm/installers/installers.py overrides the base class to add symlink/hardlink support but replaces the safe pathwithdestdir which validates via Path.resolve + isrelativeto with a bare os.path.join that performs no path validation. A malicious wheel with travers...

PT-2026-48601

Name of the Vulnerable Software and Affected Versions pdm versions prior to 2.28.0 Description The write to fs function in the InstallDestination class fails to properly validate file paths when adding symlink or hardlink support. It replaces the secure path with destdir method, which uses...

UBUNTU-CVE-2026-41082

In OCaml opam before 2.5.1, a .install field containing a destination filepath can use ../ to reach a parent directory...