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...

EUVD-2026-95345

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...

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...

CVE-2026-46455: Insufficient Session Expiration

Insufficient Session Expiration vulnerability in Apache Camel Keycloak Component. The camel-keycloak security helper KeycloakSecurityHelper.parseAndVerifyAccessToken builds a Keycloak TokenVerifier using withChecks... with only the subject-exists check and the realm-URL issuer check. Keycloak's...

NPM: Hono has improper validation of NumericDate claims (exp, nbf, iat) in JWT verify()

NPM: Hono has improper validation of NumericDate claims exp, nbf, iat in JWT verify vulnerability discovered by ? in WordPress Npm hono versions 4.12.18...

Hono has improper validation of NumericDate claims (exp, nbf, iat) in JWT verify()

Summary Improper validation of the JWT NumericDate claims exp, nbf, and iat in hono/utils/jwt allows tokens with non-spec-compliant claim values to silently bypass time-based checks. This issue is not exploitable by an anonymous attacker; it only manifests when a malformed claim value reaches...

PT-2026-6316

Name of the Vulnerable Software and Affected Versions jsonwebtoken versions prior to 10.3.0 Description A Type Confusion issue exists in jsonwebtoken, specifically within its claim validation logic. When a standard claim, such as 'nbf' or 'exp', is provided with an incorrect JSON type like a Stri...

EUVD-2019-0509

Malware in sbrugna...

Denial Of Service (DoS)

keycloak-connect is vulnerable to denial of service. Failure to validate JWT signatures on /klogout route allows remote attackers to force logout users and indefinitely deny service to the application using malicious JWTs with NBF values...

GHSA-68HW-VFH7-XVG8 Forced Logout in keycloak-connect

Versions of keycloak-connect prior to 4.4.0 are vulnerable to Forced Logout. The package fails to validate JWT signatures on the /klogout route, allowing attackers to logout users and craft malicious JWTs with NBF values that prevent user access indefinitely. Recommendation Upgrade to version 4.4...

CVE-2019-10157

It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token received from the server in its backchannel logout . An attacker with local access could use this to construct a malicious web token setting an NBF parameter that could prevent user access...

CVE-2019-10157

It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token received from the server in its backchannel logout . An attacker with local access could use this to construct a malicious web token setting an NBF parameter that could prevent user access...

Code injection

It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token received from the server in its backchannel logout . An attacker with local access could use this to construct a malicious web token setting an NBF parameter that could prevent user access...

CVE-2019-10157

It was found that Keycloak's Node.js adapter before version 4.8.3 did not properly verify the web token received from the server in its backchannel logout . An attacker with local access could use this to construct a malicious web token setting an NBF parameter that could prevent user access...