CVE-2026-29000

CRITICAL

9.1

Description

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.

Details CVE

Score CVSS v3.19.1

SeveriteCRITICAL

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

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie3/4/2026

Derniere modification3/10/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-347

References

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)

Correlations IOC

Aucune correlation enregistree

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