CVE-2026-29000

CRITICAL

9.1

Descricao

pac4j-jwt versions prior to 4.5.9, 5.7.9, and 6.3.3 contain an authentication bypass vulnerability in JwtAuthenticator when processing encrypted JWTs that allows remote attackers to forge authentication tokens. Attackers who possess the server's RSA public key can create a JWE-wrapped PlainJWT with arbitrary subject and role claims, bypassing signature verification to authenticate as any user including administrators.

Detalhes CVE

Pontuacao CVSS v3.19.1

SeveridadeCRITICAL

Vetor CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Vetor de ataqueNETWORK

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado3/4/2026

Ultima modificacao3/10/2026

Fontenvd

Avistamentos honeypot0

Fraquezas (CWE)

CWE-347

Referencias

https://www.codeant.ai/security-research/pac4j-jwt-authentication-bypass-public-key(disclosure@vulncheck.com)

https://www.pac4j.org/blog/security-advisory-pac4j-jwt-jwtauthenticator.html(disclosure@vulncheck.com)

https://www.vulncheck.com/advisories/pac4j-jwt-jwtauthenticator-authentication-bypass(disclosure@vulncheck.com)

Correlacoes IOC

Sem correlacoes registradas

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