CVE-2026-29000

CVE-2026-29000 Lab Java/SparkJava lab simulating JWT/JWE authentication vulnerability related to CVE-2026-29000. The application runs on port 4567 and provides APIs to test valid login flow, forge tokens, and check dashboard. CVE Information CVE-2026-29000 affects pac4j-jwt in versions prior to...

CVE-2026-29000-PoC

CVE-2026-29000 — pac4j-jwt JwtAuthenticator Authentication Bypass PoC A proof-of-concept for CVE-2026-29000 , an authentication bypass in the pac4j-jwt JwtAuthenticator component CVSS 10.0 , Critical. The script forges a token that impersonates any user with any role — without knowing a single...

CVE-2026-63408: Use of GET Request Method With Sensitive Query Strings

Grav API Plugin is a RESTful API for Grav CMS that provides full headless access to your site's content. Prior to 1.0.0-rc.16, the Grav API plugin JwtAuthenticator::extractBearerToken accepts a JWT from the token URL query parameter on every /api/v1 route, including state-changing endpoints...

Improper Verification of Cryptographic Signature

Overview Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature in the JwtAuthenticator component when handling encrypted JWTs. An attacker can gain unauthorized access by crafting a JWE-wrapped PlainJWT with arbitrary claims if they possess the...

CVE-2026-29000

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 wi...

pac4j-jwt data forgery vulnerability

pac4j-jwt is an JWT authentication module developed by pac4j as open source. Versions of pac4j-jwt prior to 4.5.9, 5.7.9, and 6.3.3 contained a data manipulation vulnerability. This vulnerability stems from the JwtAuthenticator’s inability to properly handle encrypted JWTs, leading to an...

CVE-2026-29000: Improper Verification of Cryptographic Signature

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 wi...