Copyright © 2012 Red Hat, Inc. All rights reserved. Moderate 2026-07-29T18:33:50 pip: pip: Arbitrary file installation via malicious package indexes 5.9 CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:L/I:H/A:L CWE-22

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.

A flaw was found in pip. When processing doubly-encoded package URLs from malicious package indexes, pip incorrectly handles the file paths. A remote attacker could exploit this by convincing a user to download or install a package from such an index. This could allow for files to be installed to arbitrary locations on the system, potentially leading to system compromise. This vulnerability primarily affects users utilizing the `pip download` command with the `--only-binary` option.

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. Red Hat Hardened Images 2026-07-30T00:00:00Z RHSA-2026:48788 python-pip-main-26.2-0.1.hum1 Red Hat Enterprise Linux 10 Fix deferred python-pip Red Hat Enterprise Linux 7 Fix deferred python-pip Red Hat Enterprise Linux 8 Fix deferred python-pip Red Hat Enterprise Linux 9 Fix deferred python-pip Red Hat OpenShift Container Platform 4 Fix deferred openshift/ose-rhel-coreos-9 https://www.cve.org/CVERecord?id=CVE-2026-13346 https://nvd.nist.gov/vuln/detail/CVE-2026-13346 https://github.com/pypa/pip/pull/14110 https://mail.python.org/archives/list/security-announce@python.org/thread/L2BNQGGVQCEV7DROOORQ7WFKKFF2OOQX/