{"id":"CVE-2021-30246","aliases":["GHSA-27fj-mc8w-j9wg"],"url":"https://o3.security/vulnerability/CVE-2021-30246","summary":"RSA signature validation vulnerability on maleable encoded message in jsrsasign","details":"In the jsrsasign package through 10.1.13 for Node.js, some invalid RSA PKCS#1 v1.5 signatures are mistakenly recognized to be valid. NOTE: there is no known practical attack.","published":"2021-04-07T21:15:16.153Z","modified":"2026-07-08T21:26:43.893729Z","cvss":{"score":9.1,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"npm","name":"jsrsasign","fixedVersion":"10.2.0"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/kjur/jsrsasign/issues/478"},{"type":"ADVISORY","url":"https://github.com/kjur/jsrsasign/releases/tag/10.1.13"},{"type":"ADVISORY","url":"https://kjur.github.io/jsrsasign/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T21:26:43.893729Z"}}