{"id":"GHSA-8cf7-32gw-wr33","summary":"jsonwebtoken unrestricted key type could lead to legacy keys usage ","details":"# Overview\n\nVersions `\u003c=8.5.1` of `jsonwebtoken` library could be misconfigured so that legacy, insecure key types are used for signature verification. For example, DSA keys could be used with the RS256 algorithm. \n\n# Am I affected?\n\nYou are affected if you are using an algorithm and a key type other than the combinations mentioned below\n\n| Key type |  algorithm                                    |\n|----------|------------------------------------------|\n| ec           | ES256, ES384, ES512                      |\n| rsa          | RS256, RS384, RS512, PS256, PS384, PS512 |\n| rsa-pss  | PS256, PS384, PS512                      |\n\nAnd for Elliptic Curve algorithms:\n\n| `alg` | Curve      |\n|-------|------------|\n| ES256 | prime256v1 |\n| ES384 | secp384r1  |\n| ES512 | secp521r1  |\n\n# How do I fix it?\n\nUpdate to version 9.0.0. This version validates for asymmetric key type and algorithm combinations. Please refer to the above mentioned algorithm / key type combinations for the valid secure configuration. After updating to version 9.0.0, If you still intend to continue with signing or verifying tokens using invalid key type/algorithm value combinations, you’ll need to set the `allowInvalidAsymmetricKeyTypes` option to `true` in the `sign()` and/or `verify()` functions.\n\n# Will the fix impact my users?\n\nThere will be no impact, if you update to version 9.0.0 and you already use a valid secure combination of key type and algorithm. Otherwise,  use the  `allowInvalidAsymmetricKeyTypes` option  to `true` in the `sign()` and `verify()` functions to continue usage of invalid key type/algorithm combination in 9.0.0 for legacy compatibility. \n\n","aliases":["CVE-2022-23539"],"modified":"2026-03-11T07:47:32.972203Z","published":"2022-12-22T03:32:22Z","database_specific":{"nvd_published_at":"2022-12-23T00:15:00Z","cwe_ids":["CWE-327"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2022-12-22T03:32:22Z"},"references":[{"type":"WEB","url":"https://github.com/auth0/node-jsonwebtoken/security/advisories/GHSA-8cf7-32gw-wr33"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2022-23539"},{"type":"WEB","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"}],"affected":[{"package":{"name":"jsonwebtoken","ecosystem":"npm","purl":"pkg:npm/jsonwebtoken"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"9.0.0"}]}],"database_specific":{"last_known_affected_version_range":"\u003c= 8.5.1","source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2022/12/GHSA-8cf7-32gw-wr33/GHSA-8cf7-32gw-wr33.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N"}]}