ReDoS in fast-jwt when using RegExp in allowed* leading to CPU exhaustion during token verification

These records connect through source-stated identifiers. Shared identifiers or dates alone do not establish shared exposure, root cause or applicability.

CVE-2026-35041 · Microsoft / collected KEV context

EUVD-2026-20899

GHSA-cjw9-ghj4-fwxf

cve-program · CVE-2026-35041

• https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf
• https://github.com/nearform/fast-jwt/pull/595
• https://github.com/nearform/fast-jwt/commit/b0be0ca161593836a153d5180ca5358ad9b5de94
• https://github.com/nearform/fast-jwt/releases/tag/v6.2.1

euvd · EUVD-2026-20899

• https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf
• https://github.com/nearform/fast-jwt/pull/595
• https://github.com/nearform/fast-jwt/commit/b0be0ca161593836a153d5180ca5358ad9b5de94
• https://github.com/nearform/fast-jwt/releases/tag/v6.2.1

nvd · CVE-2026-35041

• https://github.com/nearform/fast-jwt/commit/b0be0ca161593836a153d5180ca5358ad9b5de94
• https://github.com/nearform/fast-jwt/pull/595
• https://github.com/nearform/fast-jwt/releases/tag/v6.2.1
• https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf

osv · GHSA-cjw9-ghj4-fwxf

• https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf
• https://nvd.nist.gov/vuln/detail/CVE-2026-35041
• https://github.com/nearform/fast-jwt/pull/595
• https://github.com/nearform/fast-jwt/commit/b0be0ca161593836a153d5180ca5358ad9b5de94
• https://github.com/nearform/fast-jwt
• https://github.com/nearform/fast-jwt/releases/tag/v6.2.1

No related operational record is retained in the current change model.