{"id":"CVE-2019-9153","aliases":["GHSA-qwqc-28w3-fww6"],"url":"https://o3.security/vulnerability/CVE-2019-9153","summary":"Message Signature Bypass in openpgp","details":"Improper Verification of a Cryptographic Signature in OpenPGP.js <=4.1.2 allows an attacker to forge signed messages by replacing its signatures with a \"standalone\" or \"timestamp\" signature.","published":"2019-08-22T16:15:10.383Z","modified":"2026-07-08T20:29:57.492518Z","cvss":{"score":7.5,"severity":"HIGH","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N"},"epss":null,"cisaKev":null,"exploitsKnown":1,"affectedPackages":[{"ecosystem":"npm","name":"openpgp","fixedVersion":"4.2.0"}],"fix":{"url":"https://github.com/openpgpjs/openpgpjs/pull/797/commits/327d3e5392a6f59a4270569d200c7f7a2bfc4cbc","label":"openpgpjs/openpgpjs#797"},"references":[{"type":"ADVISORY","url":"http://packetstormsecurity.com/files/154191/OpenPGP.js-4.2.0-Signature-Bypass-Invalid-Curve-Attack.html"},{"type":"ADVISORY","url":"https://github.com/openpgpjs/openpgpjs/pull/816"},{"type":"ADVISORY","url":"https://github.com/openpgpjs/openpgpjs/releases/tag/v4.2.0"},{"type":"ADVISORY","url":"https://www.bsi.bund.de/SharedDocs/Downloads/EN/BSI/Publications/Studies/Mailvelope_Extensions/Mailvelope_Extensions_pdf.html#download=1"},{"type":"FIX","url":"https://github.com/openpgpjs/openpgpjs/pull/797/commits/327d3e5392a6f59a4270569d200c7f7a2bfc4cbc"},{"type":"EVIDENCE","url":"https://sec-consult.com/en/blog/advisories/multiple-vulnerabilities-in-openpgp-js/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-08T20:29:57.492518Z"}}