{"id":"CVE-2021-30130","aliases":["GHSA-vf4w-fg7r-5v94"],"url":"https://o3.security/vulnerability/CVE-2021-30130","summary":"Improper Certificate Validation in phpseclib","details":"phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.","published":"2021-04-06T15:15:13.497Z","modified":"2026-08-07T11:48:36.992909446Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"Packagist","name":"phpseclib/phpseclib","fixedVersion":"3.0.7"},{"ecosystem":"Packagist","name":"phpseclib/phpseclib","fixedVersion":"2.0.31"}],"fix":{"url":"https://github.com/phpseclib/phpseclib/pull/1635","label":"phpseclib/phpseclib#1635"},"references":[{"type":"ADVISORY","url":"https://github.com/phpseclib/phpseclib/releases/tag/2.0.31"},{"type":"ADVISORY","url":"https://github.com/phpseclib/phpseclib/releases/tag/3.0.7"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00024.html"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2022/11/msg00025.html"},{"type":"FIX","url":"https://github.com/phpseclib/phpseclib/pull/1635"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T11:48:36.992909446Z"}}