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CVE-2026-44351 fast-jwt: Empty HMAC secret accepted via async key resolver - JWT auth bypass

🗓️ 13 May 2026 19:12:33Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 1 Views

Critical authentication bypass in fast-jwt before 6.2.4 allows forging JWTs with an empty key in the async key resolver.

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08 Jul 2026 08:13Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.19.1
EPSS0.00236
1