CVE-2026-29000

CRITICAL

9.1

Beschreibung

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.

CVE Details

CVSS v3.1 Bewertung9.1

SchweregradCRITICAL

CVSS VektorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

AngriffsvektorNETWORK

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht3/4/2026

Zuletzt geandert3/10/2026

Quellenvd

Honeypot-Sichtungen0

Schwachen (CWE)

CWE-347

Referenzen

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)

IOC Korrelationen

Keine Korrelationen erfasst

This product uses data from the NVD API but is not endorsed or certified by the NVD.