{"id":"CVE-2022-23541","aliases":["GHSA-hjrf-2m68-5959"],"url":"https://o3.security/vulnerability/CVE-2022-23541","summary":"jsonwebtoken's insecure implementation of key retrieval function could lead to Forgeable Public/Private Tokens from RSA to HMAC","details":"# Overview\n\nVersions `<=8.5.1` of `jsonwebtoken` library can be misconfigured so that passing a poorly implemented key retrieval function (referring to the `secretOrPublicKey` argument from the [readme link](https://github.com/auth0/node-jsonwebtoken#jwtverifytoken-secretorpublickey-options-callback)) will result in incorrect verification of tokens. There is a possibility of using a different algorithm and key combination in verification  than the one that was used to sign the tokens. Specifically, tokens signed with an asymmetric public key could be verified with a symmetric HS256 algorithm. This can lead to successful validation of forged tokens. \n\n# Am I affected?\n\nYou will be affected if your application is supporting usage of both symmetric key and asymmetric key in jwt.verify() implementation with the same key retrieval function. \n\n# How do I fix it?\n \nUpdate to version 9.0.0.\n\n# Will the fix impact my users?\n\nThere is no impact for end users","published":"2022-12-22T17:52:22.173Z","modified":"2026-08-12T03:51:21.604524854Z","cvss":{"score":5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L"},"epss":{"score":0.00753,"percentile":0.53386,"asOf":"2026-09-17"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"npm","name":"jsonwebtoken","fixedVersion":"9.0.0"}],"fix":{"url":"https://github.com/auth0/node-jsonwebtoken/commit/e1fa9dcc12054a8681db4e6373da1b30cf7016e3","label":"auth0/node-jsonwebtoken@e1fa9dc"},"references":[{"type":"WEB","url":"https://github.com/auth0/node-jsonwebtoken/releases/tag/v9.0.0"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/23xxx/CVE-2022-23541.json"},{"type":"ADVISORY","url":"https://github.com/auth0/node-jsonwebtoken/security/advisories/GHSA-hjrf-2m68-5959"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23541"},{"type":"ADVISORY","url":"https://security.netapp.com/advisory/ntap-20240621-0007/"},{"type":"FIX","url":"https://github.com/auth0/node-jsonwebtoken/commit/e1fa9dcc12054a8681db4e6373da1b30cf7016e3"},{"type":"PACKAGE","url":"https://github.com/auth0/node-jsonwebtoken"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20240621-0007"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:21.604524854Z"}}