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

Description

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

Ghostwire Analysis — What This Means Practically

Exploitation Probability (EPSS): Low — 0.33% (25th percentile)

Low exploitation probability based on current threat landscape data. Standard patching timeline is appropriate.

Medium CVSS score indicates moderate risk — exploitation requires specific conditions or results in limited impact.
2 proof-of-concept exploits available on GitHub. Public exploit code lowers the barrier for both researchers and attackers.

This analysis is generated by Ghostwire from NVD, CISA KEV, EPSS, and open-source intelligence data. Verify findings through primary sources before acting.

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

Description

Ghostwire Analysis — What This Means Practically

Proof-of-Concept Exploits (2)

Security Coverage (1 articles)

References