NPM: fast-jwt clockTolerance: Infinity silently bypasses both exp and nbf validation (and persists in the verifier cache)

NPM: fast-jwt clockTolerance: Infinity silently bypasses both exp and nbf validation and persists in the verifier cache vulnerability discovered by ? in WordPress Npm fast-jwt versions = 6.2.4...

CVE-2026-107721

The fast-jwt library, prior to version 6.3.0 , contains a vulnerability where setting clockTolerance to Infinity bypasses both exp (expiration) and nbf (not before) validations. This occurs because the createVerifier function fails to check for finiteness during option validation. Consequently, t...

CVE-2026-107721 fast-jwt clockTolerance: Infinity silently bypasses both exp and nbf validation (and persists in the verifier cache)

fast-jwt provides fast JSON Web Token JWT implementation. Prior to 6.3.0, fast-jwt createVerifier accepts Infinity for clockTolerance because its option validation checks type and negativity but not finiteness. In validateClaimDateValue, infinite positive and negative modifiers make exp and nbf...

GO-2026-6469 ZITADEL: Missing Token Expiration (`exp`) Validation in JWT IdP Provider in github.com/zitadel/zitadel

ZITADEL: Missing Token Expiration exp Validation in JWT IdP Provider in github.com/zitadel/zitadel. NOTE: The source advisory for this report contains additional versions that could not be automatically mapped to standard Go module versions. If this is causing false-positive reports from...

GHSA-V77H-2W3M-94HX ZITADEL: Missing Token Expiration (`exp`) Validation in JWT IdP Provider

Summary A token lifecycle validation vulnerability was discovered in ZITADEL's external JWT Identity Provider IdP implementation Specifically, within the validation pipeline, if an incoming JWT omits the exp claim entirely, the expiration block is silently skipped rather than rejected. The token ...