CVE-2026-13346 — pip absolute path traversal during download from malicious package indexes
pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk even when installing wheels. This vul…
Published: 2026-07-29 · CVSS: 5.6 · CVSS 4.0
pip would incorrectly handle doubly-encoded package URLs from indexes allowing for files to be installed to arbitrary locations on disk even when installing wheels. This vulnerability requires downloading or installing a package from a malicious package index to succeed, malicious packages alone are not able to exploit this vulnerability. Note that this vulnerability only materially impacts users running `pip download` with the `--only-binary` option as installing source distributions from an untrusted index is already an unsafe operation that executes code during install time.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7