pac4j-check

pac4j-check 离线排查 CVE-2026-29000CVSS 10.0—— 包括官方 advisory 没有列出的那些包。 English | 中文 单个 jar,约 24KB,零运行时依赖,Java 8 起可用,完全离线,不外传任何数据。 这个漏洞是什么 org.pac4j:pac4j-jwt 的 JwtAuthenticator 在处理加密 JWTJWE 时未强制校验签名。 攻击者只要拿到服务器的 RSA 公钥公钥本来就是公开的, 就能构造一个 JWE 包裹的 PlainJWT,把 subject 和 role 写成任意值, 以任意用户身份登录,包括管理员 。无需任何凭据。...

CVE-2026-29000-PoC-Exploit

🚀 CVE-2026-29000 - pac4j-jwt Authentication Bypass Exploit CVE-2026-29000 - One-Click Admin Forge via JWT alg:none + JWE Encryption 📌 Overview This exploit weaponizes CVE-2026-29000 , a critical CVSS 10.0 vulnerability in the pac4j-jwt library. By extracting the server's public JWKS key and...

CVE-2026-29000-PoC

CVE-2026-29000 — Bypass de autenticación en JwtAuthenticator de pac4j-jwt — PoC Una prueba de concepto para CVE-2026-29000 , un bypass de autenticación en el componente pac4j-jwt JwtAuthenticator CVSS 10.0 , Crítico. El script forja un token que suplanta a cualquier usuario con cualquier rol — si...

CVE-2026-29000

CVE-2026-29000: Prueba de Concepto de Bypass de Autenticación JWT en pac4j Prueba de Concepto para CVE-2026-29000 - Una vulnerabilidad crítica de bypass de autenticación en la implementación JWT de pac4j que permite a atacantes falsificar tokens de administrador sin una firma válida. ⚠️ AVISO LEGA...

CVE-2026-29000-pac4j-jwt

pac4j-jwe-forge CVE-2026-29000 Proof-of-concept for CVE-2026-29000. Targets pac4j-jwt versions prior to 4.5.9, 5.7.9, and 6.3.3. The vulnerability is straightforward: the library accepts a PlainJWT unsigned, alg=none as long as it's wrapped inside a valid JWE. Since the server exposes its RSA...

CVE-2026-29000

CVE-2026-29000 CVE-2026-29000: Critical Authentication Bypass in pac4j-jwt - Using Only a Public Key CVSS 10 pac4j-jwt Authentication Bypass Exploit CVE-2026-29000 Vulnerability Summary CVE-2026-29000 is a critical authentication bypass in the pac4j-jwt library versions 6.0.3 and below. When the...

CVE-2026-29000-Lab

CVE-2026-29000 — pac4j-jwt Library-Level PoC Lab TL;DR This repository contains a library-level PoC for CVE-2026-29000 in pac4j-jwt. It compares vulnerable and patched behavior with two cases: Baseline : a legitimate token should be accepted Attack : a forged token should be accepted on vulnerabl...

CVE-2026-29000

CVE-2026-29000: pac4j-jwt Authentication Bypass POC This repository contains a proof-of-concept POC for an authentication bypass vulnerability in pac4j-jwt CVE-2026-29000. The vulnerability allows an attacker to bypass signature verification by nesting a PlainJWT using alg: none inside a JWE JSON...

CVE-2026-29000---pac4j-jwt-Authentication-Bypass-PoC

CVE-2026-29000 - pac4j-jwt Authentication Bypass PoC Note: This is not my original work. I am keeping this here for a reference. Working methodology: root@kitploit: python3 exploit.py http://IP:PORT Fetching JWKS... + Got RSA public key kid: enc-key-1 Crafted PlainJWT with sub=admin, role=ROLEADM...

CVE-2026-29000

CVE-2026-29000: pac4j-jwt JwtAuthenticator 인증 우회 전체 구성: 분석 문서writeup, Java 인프로세스 PoC, Python 토큰 위조 CLI 및 라이브러리, 테스트. 요약 CVE: CVE-2026-29000 CVSS 10, CWE-347 영향 범위: JWE + 서명 구성을 사용하는 pac4j-jwt 4.5.9 / 5.7.9 / 6.3.3 문제점: JWE로 래핑된 PlainJWT서명 없음가 서명 검증을 우회합니다. 공격자는 서버의 RSA 공개 키만 있으면 토큰을 위조하고 임의의 사용자로...

CVE-2026-29000

CVE-2026-29000 A proof of concept script for CVE-2026-29000, a critical authentication bypass vulnerability found in the pac4j-jwt library DISCLAIMER This Proof of Concept is for educational and ethical security testing purposes only. It was developed to demonstrate the technical root cause of...

CVE-2026-29000-pac4j-jwt-auth-bypass

HTB Principal — CVE-2026-29000 Writeup Disclaimer: This exploit was developed solely for the retired HackTheBox machine "Principal". For educational purposes only. Do not use against systems you do not own or have explicit permission to test. Machine Info...

CVE-2026-29000

CVE-2026-29000 — pac4j-jwt JWE Authentication Bypass CTF lab for researching the JWE authentication vulnerability in the pac4j-jwt library CVSS 9.3 Critical · CWE-287 · Affected: pac4j-jwt ← access admin panel ↓ Read sensitive data: employee list, system config, flag Project structure...

CVE-2026-29000

CVE-2026-29000: Proof of Concept PoC for pac4j-jwt Auth Bypass ⚠️ Disclaimer This tool is for educational and ethical security testing purposes only. I do not and will not support threat acting in any way, shape or form. Use at your own risk. This is also my first PoC, so be nice please. This is...

CVE-2026-29000

CVE-2026-29000 Exploit Generator Rust This repository contains a specialized Rust implementation for exploiting CVE-2026-29000, an authentication bypass vulnerability in pac4j-jwt. The vulnerability stems from a "Signature Validation Skip" when a PlainJWT alg: none is nested within an encrypted J...

cve-2026-29000

CVE-2026-29000 Exploit JWT Authentication Bypass in pac4j-jwt via JWE-wrapped PlainJWT Vulnerability Description CVE-2026-29000 is a critical authentication bypass vulnerability affecting pac4j-jwt versions prior to 4.5.9, 5.7.9, and 6.3.3. The vulnerability allows remote attackers to forge...

CVE-2026-29000

Simple script that exploits CVE-2026-29000. All you need is the public key in the PEM format and you can use this. For more info on the vulnerability read: https://www.codeant.ai/security-research/pac4j-jwt-authentication-bypass-public-key...

Principal-HackTheBox

HackTheBox — Principal Difficulty: Medium OS: Linux Platform: HackTheBox Overview Web application running pac4j-jwt v6.0.3 — vulnerable to CVE-2026-29000. The public RSA key is exposed unauthenticated via a JWKS endpoint and can be used to forge a valid admin JWE token, bypassing authentication...

CVE-2026-29000-Python-PoC-pac4j-JWT-AuthenticationBypass-Poc

CVE-2026-29000 – pac4j JWT Authentication Bypass Python PoC Python Proof‑of‑Concept for CVE‑2026‑29000 , a critical authentication bypass affecting applications using the pac4j JWT module. The vulnerability allows attackers to authenticate as arbitrary users by sending a malicious JWE token...

CVE-2023-25581

Este script en Python demuestra la explotación de la vulnerabilidad CVE-2023-25581 en pac4j-core. La vulnerabilidad permite a un atacante ejecutar código arbitrario RCE mediante la deserialización de datos codificados en Base64 maliciosamente manipulados. Requisitos previos Antes de ejecutar el...