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13 May 2026

Vulnerabilities first published on this day (UTC), newest first.

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  • Critical 9.1
    CVE-2026-44351 Public exploit

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

    fast-jwt provides fast JSON Web Token (JWT) implementation. Prior to 6.2.4, a critical authentication-bypass vulnerability in fast-jwt's async key-resolver flow allows any unauthenticated attacker to forge arbitrary JWTs that are accepted as authentic. When t…