{"id":"CVE-2026-35039","revision":"c5df71b2f6cd4d768ccfbd4f26baa26e","records":[{"revision":"c5df71b2f6cd4d768ccfbd4f26baa26e","observedAt":"2026-10-25T08:17:35.884+00:00","statement":{"source":"nvd","id":"CVE-2026-35039","aliases":[],"title":"fast-jwt provides fast JSON Web Token (JWT) implementation. From 0.0.1 to before 6.2.0, setting up a custom cacheKeyBuilder method which does not properly create unique keys for different tokens can lead to cache collisions. This could caus…","description":"fast-jwt provides fast JSON Web Token (JWT) implementation. From 0.0.1 to before 6.2.0, setting up a custom cacheKeyBuilder method which does not properly create unique keys for different tokens can lead to cache collisions. This could cause tokens to be mis-identified during the verification process leading to valid tokens returning claims from different valid tokens and users being mis-identified as other users based on the wrong token. Version 6.2.0 contains a patch.","state":0,"publishedAt":"2026-04-06T17:17:13.243+00:00","modifiedAt":"2026-10-23T23:10:00.157+00:00","affected":[],"metrics":[{"system":"CVSS 3.1 · security-advisories@github.com · Secondary","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","score":9.1,"severity":"CRITICAL"}],"references":["https://github.com/nearform/fast-jwt/commit/de121056c6415b58770c60640881eaec67ac4ceb","https://github.com/nearform/fast-jwt/security/advisories/GHSA-rp9m-7r4c-75qg"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-35039","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Analyzed","weaknesses":["CWE-345","CWE-706","CWE-1289"],"productCriteria":["cpe:2.3:a:nearform:fast-jwt:*:*:*:*:*:node.js:*:*"],"sourceDates":{"published":"2026-04-06T17:17:13.243","lastModified":"2026-10-23T23:10:00.157"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-35039","identifiers":["CVE-2026-35039"]},"retained":false,"historicalAffected":[]}],"coverage":[]}