{"id":"CVE-2026-13346","aliases":["GHSA-qwm4-qh6w-59xr","PYSEC-2026-3721"],"url":"https://o3.security/vulnerability/CVE-2026-13346","summary":"pip absolute path traversal during download from malicious package indexes","details":"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.\n\n\n\n\nThis 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.","published":"2026-07-29T18:33:50.820Z","modified":"2026-10-08T19:26:48.666351934Z","cvss":null,"epss":{"score":0.00292,"percentile":0.21914,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"pip","fixedVersion":"26.2.0"}],"fix":{"url":"https://github.com/pypa/pip/pull/14110","label":"pypa/pip#14110"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/07/29/7"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/13xxx/CVE-2026-13346.json"},{"type":"ADVISORY","url":"https://mail.python.org/archives/list/security-announce@python.org/thread/L2BNQGGVQCEV7DROOORQ7WFKKFF2OOQX/"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-13346"},{"type":"FIX","url":"https://github.com/pypa/pip/pull/14110"},{"type":"PACKAGE","url":"https://github.com/pypa/pip"},{"type":"PACKAGE","url":"https://pypi.org/project/pip"},{"type":"WEB","url":"https://github.com/pypa/pip/commit/10dfb6b9005484578b386f64b9f36982e3dc6679"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/pip/PYSEC-2026-3721.yaml"},{"type":"WEB","url":"https://mail.python.org/archives/list/security-announce@python.org/thread/L2BNQGGVQCEV7DROOORQ7WFKKFF2OOQX"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-08T19:26:48.666351934Z"}}