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2 vulnerabilities found for pac4j-jwt by pac4j
CVE-2026-29000 (GCVE-0-2026-29000)
Vulnerability from nvd – Published: 2026-03-04 21:49 – Updated: 2026-05-11 23:11
VLAI
Title
pac4j-jwt JwtAuthenticator Authentication Bypass
Summary
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.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.pac4j.org/blog/security-advisory-pac4… | vendor-advisory |
| https://www.codeant.ai/security-research/pac4j-jw… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/pac4j-jwt-jw… | third-party-advisory |
Impacted products
Credits
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CVE-2026-29000 (GCVE-0-2026-29000)
Vulnerability from cvelistv5 – Published: 2026-03-04 21:49 – Updated: 2026-05-11 23:11
VLAI
Title
pac4j-jwt JwtAuthenticator Authentication Bypass
Summary
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.
Severity
9.1 (Critical)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-347 - Improper Verification of Cryptographic Signature
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://www.pac4j.org/blog/security-advisory-pac4… | vendor-advisory |
| https://www.codeant.ai/security-research/pac4j-jw… | technical-descriptionexploit |
| https://www.vulncheck.com/advisories/pac4j-jwt-jw… | third-party-advisory |
Impacted products
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