fast-jwt: Stateful RegExp (/g or /y) causes non-deterministic allowed-claim validation (logical DoS)

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

CVE-2026-35040 · Microsoft / collected KEV context

EUVD-2026-20898

GHSA-3j8v-cgw4-2g6q

cve-program · CVE-2026-35040

• https://github.com/nearform/fast-jwt/security/advisories/GHSA-3j8v-cgw4-2g6q
• https://github.com/nearform/fast-jwt/pull/593
• https://github.com/nearform/fast-jwt/commit/18d25904e4617e8753526d1b3ab5a2cccdea726a
• https://github.com/nearform/fast-jwt/releases/tag/v6.2.1

euvd · EUVD-2026-20898

• https://github.com/nearform/fast-jwt/security/advisories/GHSA-3j8v-cgw4-2g6q
• https://github.com/nearform/fast-jwt/pull/593
• https://github.com/nearform/fast-jwt/commit/18d25904e4617e8753526d1b3ab5a2cccdea726a
• https://github.com/nearform/fast-jwt/releases/tag/v6.2.1

nvd · CVE-2026-35040

• https://github.com/nearform/fast-jwt/commit/18d25904e4617e8753526d1b3ab5a2cccdea726a
• https://github.com/nearform/fast-jwt/pull/593
• https://github.com/nearform/fast-jwt/releases/tag/v6.2.1
• https://github.com/nearform/fast-jwt/security/advisories/GHSA-3j8v-cgw4-2g6q

osv · GHSA-3j8v-cgw4-2g6q

• https://github.com/nearform/fast-jwt/security/advisories/GHSA-3j8v-cgw4-2g6q
• https://nvd.nist.gov/vuln/detail/CVE-2026-35040
• https://github.com/nearform/fast-jwt/pull/593
• https://github.com/nearform/fast-jwt/commit/18d25904e4617e8753526d1b3ab5a2cccdea726a
• 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.