{"id":"CVE-2016-20021","aliases":["GHSA-pw5x-x5jw-ccmh","PYSEC-2024-10"],"url":"https://o3.security/vulnerability/CVE-2016-20021","summary":"Gentoo Portage missing PGP validation of executed code","details":"In Gentoo Portage before 3.0.47, there is missing PGP validation of executed code: the standalone emerge-webrsync downloads a .gpgsig file but does not perform signature verification. Unless emerge-webrsync is used, Portage is not vulnerable.","published":"2024-01-12T03:15:08.410Z","modified":"2026-10-24T10:30:17.153327918Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"PyPI","name":"portage","fixedVersion":"3.0.47"}],"fix":{"url":"https://github.com/gentoo/portage/commit/28cd240fb23d880b8641a058831c6762db71c3e2","label":"gentoo/portage@28cd240"},"references":[{"type":"WEB","url":"https://wiki.gentoo.org/wiki/Portage"},{"type":"ADVISORY","url":"https://gitweb.gentoo.org/proj/portage.git/tree/NEWS"},{"type":"FIX","url":"https://bugs.gentoo.org/597800"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2016-20021"},{"type":"WEB","url":"https://github.com/gentoo/portage/commit/28cd240fb23d880b8641a058831c6762db71c3e2"},{"type":"PACKAGE","url":"https://github.com/gentoo/portage"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/portage/PYSEC-2024-10.yaml"},{"type":"WEB","url":"https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=5b3c80502e96406b4b175e2ee79eb65f3f3cd9f6"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-10-24T10:30:17.153327918Z"}}