{"schema_version":1,"title":"fast-jwt (npm) vulnerabilities","summary":"Junglewise Threat Intelligence has tracked 8 vulnerabilities in fast-jwt (npm): 0 in the last 7 days and 0 in the last 90 days, 1 of them critical and 0 exploited in the wild. The most recent, CVE-2026-44351, was published on 13 May 2026.","url":"https://junglewise.ai/threats/technologies/fast-jwt","json_url":"https://junglewise.ai/threats/technologies/fast-jwt.json","publisher":"Junglewise Threat Intelligence","license":"CC-BY-4.0","license_url":"https://creativecommons.org/licenses/by/4.0/","attribution":"Junglewise Threat Intelligence, https://junglewise.ai/threats/technologies/fast-jwt","sources":"NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories","kind":"technology","counts":{"high":0,"all_time":8,"critical":1,"exploited":0,"last_7_days":0,"last_30_days":0,"last_90_days":0,"last_365_days":6},"latest":[{"cve":"CVE-2026-44351","cvss":9.1,"epss":0.0033,"slug":"cve-2026-44351-nearform-fast-jwt-authentication-bypass-in-async-key-resolver","title":"nearform fast-jwt authentication bypass in async key resolver","severity":"critical","exploited":false,"published_at":"2026-05-13T20:16:22.86+00:00","url":"https://junglewise.ai/threats/cve-2026-44351-nearform-fast-jwt-authentication-bypass-in-async-key-resolver"},{"cve":"CVE-2026-35041","cvss":3.1,"epss":0.0043,"slug":"cve-2026-35041-fast-jwt-redos-in-regexp-claim-validation-leading-to-cpu","title":"fast-jwt ReDoS in regexp claim validation leading to CPU exhaustion","severity":"low","exploited":false,"published_at":"2026-04-09T16:41:40+00:00","url":"https://junglewise.ai/threats/cve-2026-35041-fast-jwt-redos-in-regexp-claim-validation-leading-to-cpu"},{"cve":"CVE-2026-35040","cvss":3.1,"epss":0.0063,"slug":"cve-2026-35040-nearform-fast-jwt-non-deterministic-validation-in-claim-matcher","title":"fast-jwt stateful RegExp causes non-deterministic claim validation","severity":"low","exploited":false,"published_at":"2026-04-09T16:41:20+00:00","url":"https://junglewise.ai/threats/cve-2026-35040-nearform-fast-jwt-non-deterministic-validation-in-claim-matcher"},{"cve":"CVE-2026-35042","cvss":3.1,"epss":0.002,"slug":"cve-2026-35042-fast-jwt-crit-header-validation-bypass","title":"fast-jwt crit header validation bypass","severity":"low","exploited":false,"published_at":"2026-04-03T22:01:25+00:00","url":"https://junglewise.ai/threats/cve-2026-35042-fast-jwt-crit-header-validation-bypass"},{"cve":"CVE-2026-35039","cvss":3.1,"epss":0.0022,"slug":"cve-2026-35039-fast-jwt-cachekeybuilder-collision-identity-mixup","title":"fast-jwt cacheKeyBuilder collision identity mixup","severity":"low","exploited":false,"published_at":"2026-04-03T04:07:09+00:00","url":"https://junglewise.ai/threats/cve-2026-35039-fast-jwt-cachekeybuilder-collision-identity-mixup"},{"cve":"CVE-2026-34950","cvss":3.1,"epss":0.0027,"slug":"cve-2026-34950-nearform-fast-jwt-algorithm-confusion-via-whitespace-prefixed-rsa","title":"NearForm fast-jwt algorithm confusion via whitespace-prefixed RSA public key","severity":"low","exploited":false,"published_at":"2026-04-02T20:37:54+00:00","url":"https://junglewise.ai/threats/cve-2026-34950-nearform-fast-jwt-algorithm-confusion-via-whitespace-prefixed-rsa"},{"cve":"CVE-2025-30144","cvss":3.1,"epss":0.0058,"slug":"cve-2025-30144-nearform-fast-jwt-improper-iss-claim-validation","title":"NearForm Fast-JWT improper iss claim validation","severity":"low","exploited":false,"published_at":"2025-03-19T15:48:43+00:00","url":"https://junglewise.ai/threats/cve-2025-30144-nearform-fast-jwt-improper-iss-claim-validation"},{"cve":"CVE-2023-48223","cvss":3.1,"epss":0.0068,"slug":"cve-2023-48223-fast-jwt-jwt-algorithm-confusion","title":"fast-jwt JWT algorithm confusion","severity":"low","exploited":false,"published_at":"2023-11-20T20:58:56+00:00","url":"https://junglewise.ai/threats/cve-2023-48223-fast-jwt-jwt-algorithm-confusion"}],"weekly":[{"week":"2026-06-29","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-06","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-13","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-20","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-07-27","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-03","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-10","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-17","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-24","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-08-31","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-07","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-14","critical":0,"exploited":0,"vulnerabilities":0},{"week":"2026-09-21","critical":0,"exploited":0,"vulnerabilities":0}],"related":[{"name":"flowise (npm)","slug":"flowise","vulnerabilities":156,"url":"https://junglewise.ai/threats/technologies/flowise"},{"name":"vm2 (npm)","slug":"vm2","vulnerabilities":82,"url":"https://junglewise.ai/threats/technologies/vm2"},{"name":"@budibase/server (npm)","slug":"budibase-server","vulnerabilities":61,"url":"https://junglewise.ai/threats/technologies/budibase-server"},{"name":"directus (npm)","slug":"directus","vulnerabilities":60,"url":"https://junglewise.ai/threats/technologies/directus"},{"name":"nocodb (npm)","slug":"nocodb","vulnerabilities":55,"url":"https://junglewise.ai/threats/technologies/nocodb"},{"name":"hono (npm)","slug":"hono","vulnerabilities":54,"url":"https://junglewise.ai/threats/technologies/hono"},{"name":"parse-server (npm)","slug":"parse-server","vulnerabilities":42,"url":"https://junglewise.ai/threats/technologies/parse-server"},{"name":"dompurify (npm)","slug":"dompurify","vulnerabilities":39,"url":"https://junglewise.ai/threats/technologies/dompurify"},{"name":"ghost (npm)","slug":"ghost","vulnerabilities":39,"url":"https://junglewise.ai/threats/technologies/ghost"},{"name":"flowise-components (npm)","slug":"flowise-components","vulnerabilities":35,"url":"https://junglewise.ai/threats/technologies/flowise-components"},{"name":"astro (npm)","slug":"astro","vulnerabilities":30,"url":"https://junglewise.ai/threats/technologies/astro"},{"name":"@anthropic-ai/claude-code (npm)","slug":"anthropic-ai-claude-code","vulnerabilities":28,"url":"https://junglewise.ai/threats/technologies/anthropic-ai-claude-code"}],"technology":{"hub":true,"name":"fast-jwt (npm)","slug":"fast-jwt","vendor":{"name":"npm","slug":"npm","url":"https://junglewise.ai/threats/vendors/npm"},"aliases":[],"homepage":"https://www.npmjs.com/package/fast-jwt","repo_url":"https://github.com/fastify/fast-jwt","description":"A library for JSON Web Token (JWT) signing and verification optimized for performance.","url":"https://junglewise.ai/threats/technologies/fast-jwt"},"most_severe":[{"cve":"CVE-2026-44351","cvss":9.1,"epss":0.0033,"slug":"cve-2026-44351-nearform-fast-jwt-authentication-bypass-in-async-key-resolver","title":"nearform fast-jwt authentication bypass in async key resolver","severity":"critical","exploited":false,"published_at":"2026-05-13T20:16:22.86+00:00","url":"https://junglewise.ai/threats/cve-2026-44351-nearform-fast-jwt-authentication-bypass-in-async-key-resolver"},{"cve":"CVE-2023-48223","cvss":3.1,"epss":0.0068,"slug":"cve-2023-48223-fast-jwt-jwt-algorithm-confusion","title":"fast-jwt JWT algorithm confusion","severity":"low","exploited":false,"published_at":"2023-11-20T20:58:56+00:00","url":"https://junglewise.ai/threats/cve-2023-48223-fast-jwt-jwt-algorithm-confusion"},{"cve":"CVE-2026-35040","cvss":3.1,"epss":0.0063,"slug":"cve-2026-35040-nearform-fast-jwt-non-deterministic-validation-in-claim-matcher","title":"fast-jwt stateful RegExp causes non-deterministic claim validation","severity":"low","exploited":false,"published_at":"2026-04-09T16:41:20+00:00","url":"https://junglewise.ai/threats/cve-2026-35040-nearform-fast-jwt-non-deterministic-validation-in-claim-matcher"},{"cve":"CVE-2025-30144","cvss":3.1,"epss":0.0058,"slug":"cve-2025-30144-nearform-fast-jwt-improper-iss-claim-validation","title":"NearForm Fast-JWT improper iss claim validation","severity":"low","exploited":false,"published_at":"2025-03-19T15:48:43+00:00","url":"https://junglewise.ai/threats/cve-2025-30144-nearform-fast-jwt-improper-iss-claim-validation"},{"cve":"CVE-2026-35041","cvss":3.1,"epss":0.0043,"slug":"cve-2026-35041-fast-jwt-redos-in-regexp-claim-validation-leading-to-cpu","title":"fast-jwt ReDoS in regexp claim validation leading to CPU exhaustion","severity":"low","exploited":false,"published_at":"2026-04-09T16:41:40+00:00","url":"https://junglewise.ai/threats/cve-2026-35041-fast-jwt-redos-in-regexp-claim-validation-leading-to-cpu"},{"cve":"CVE-2026-34950","cvss":3.1,"epss":0.0027,"slug":"cve-2026-34950-nearform-fast-jwt-algorithm-confusion-via-whitespace-prefixed-rsa","title":"NearForm fast-jwt algorithm confusion via whitespace-prefixed RSA public key","severity":"low","exploited":false,"published_at":"2026-04-02T20:37:54+00:00","url":"https://junglewise.ai/threats/cve-2026-34950-nearform-fast-jwt-algorithm-confusion-via-whitespace-prefixed-rsa"},{"cve":"CVE-2026-35039","cvss":3.1,"epss":0.0022,"slug":"cve-2026-35039-fast-jwt-cachekeybuilder-collision-identity-mixup","title":"fast-jwt cacheKeyBuilder collision identity mixup","severity":"low","exploited":false,"published_at":"2026-04-03T04:07:09+00:00","url":"https://junglewise.ai/threats/cve-2026-35039-fast-jwt-cachekeybuilder-collision-identity-mixup"},{"cve":"CVE-2026-35042","cvss":3.1,"epss":0.002,"slug":"cve-2026-35042-fast-jwt-crit-header-validation-bypass","title":"fast-jwt crit header validation bypass","severity":"low","exploited":false,"published_at":"2026-04-03T22:01:25+00:00","url":"https://junglewise.ai/threats/cve-2026-35042-fast-jwt-crit-header-validation-bypass"}],"generated_at":"2026-09-26T10:14:00.201383+00:00"}