{"id":"GHSA-9gxv-x7rp-r2hc","aliases":[],"url":"https://o3.security/vulnerability/GHSA-9gxv-x7rp-r2hc","summary":"gree/jose - \"None\" Algorithm treated as valid in tokens","details":"Several widely-used JSON Web Token (JWT) libraries, including node-jsonwebtoken, pyjwt, namshi/jose, php-jwt, and jsjwt, are affected by critical vulnerabilities that could allow attackers to bypass the verification step when using asymmetric keys (RS256, RS384, RS512, ES256, ES384, ES512).","published":"2024-05-15T21:47:39Z","modified":"2026-07-16T19:00:22.053841153Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Packagist","name":"gree/jose","fixedVersion":"2.2.1"}],"fix":null,"references":[{"type":"WEB","url":"https://auth0.com/blog/2015/03/31/critical-vulnerabilities-in-json-web-token-libraries"},{"type":"WEB","url":"https://auth0.com/blog/critical-vulnerabilities-in-json-web-token-libraries"},{"type":"WEB","url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/gree/jose/2016-08-30.yaml"},{"type":"PACKAGE","url":"https://github.com/nov/jose-php"},{"type":"WEB","url":"https://github.com/nov/jose-php/compare/2.2.0...2.2.1"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-16T19:00:22.053841153Z"}}