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jwt ruby-jwt vulnerabilities

1 published CVE affecting jwt ruby-jwt, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).

Total
1
Critical
1
High
0
Medium
0
Low
0
Unscored
0
CISA KEV
0

Latest jwt ruby-jwt CVEs

Newest publication first

  1. CVE-2026-45363 `jwt` (Ruby gem) - empty-key HMAC bypass

    Published
    CriticalCVSS 9.1 PoC

    ruby-jwt is a Ruby implementation of the RFC 7519 OAuth JSON Web Token standard. Prior to 2.10.3 and 3.2.0, JWT.decode(token, '', true, algorithm: 'HS256') accepts an attacker-forged token because OpenSSL::HMAC.digest('SHA256', '', payload) returns a valid digest under an empty k...

Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.