CVE-2026-13346: Pypa Pip

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Pypa Pip: before 26.2 (fixed in 26.2)

Published 2026-07-29. Last modified 2026-08-20.