{"id":"EUVD-2026-19356","revision":"2225d64780ac4de587ba451e673b0b5e","records":[{"revision":"2225d64780ac4de587ba451e673b0b5e","observedAt":"2026-10-30T05:51:57.462+00:00","statement":{"source":"euvd","id":"EUVD-2026-19356","aliases":["CVE-2026-34950","GHSA-mvf2-f6gm-w987"],"title":"fast-jwt provides fast JSON Web Token (JWT) implementation. In 6.1.0 and earlier, the publicKeyPemMatcher regex in fast-jwt/src/crypto.js uses a ^ anchor that is defeated by any leading whitespace in the key string, re-enabling the exact sa…","description":"fast-jwt provides fast JSON Web Token (JWT) implementation. In 6.1.0 and earlier, the publicKeyPemMatcher regex in fast-jwt/src/crypto.js uses a ^ anchor that is defeated by any leading whitespace in the key string, re-enabling the exact same JWT algorithm confusion attack that CVE-2023-48223 patched.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1,"severity":null}],"references":["https://github.com/nearform/fast-jwt/security/advisories/GHSA-mvf2-f6gm-w987"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-19356","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 6, 2026, 3:54:03 PM","dateUpdated":"Apr 6, 2026, 6:43:16 PM"},"relatedAdvisories":[],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-19356","identifiers":["EUVD-2026-19356","CVE-2026-34950","GHSA-mvf2-f6gm-w987"]},"retained":false,"historicalAffected":[]}],"coverage":[]}