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...

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-2026-53938

A flaw was found in cjose, a C library for Javascript Object Signing and Encryption JOSE. A remote, unauthenticated attacker can exploit a heap buffer overflow vulnerability in the AES Key Wrap decryption process. By submitting a crafted Javascript Web Encryption JWE to an application, the attack...

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

CVE-2026-29000 – pac4j JWT 认证绕过（Python PoC） 针对 CVE‑2026‑29000 的 Python 概念验证（PoC），该漏洞是一个影响使用 pac4j JWT 模块 的应用的严重认证绕过漏洞。 该漏洞允许攻击者通过发送包含 未签名 PlainJWT（alg: none） 的恶意 JWE 令牌 来以任意用户身份进行认证。 🧠 漏洞概述 使用 pac4j 的应用可能采用以下令牌流程： 1. 用户通过 /api/auth/login 进行认证 2. 服务器返回一个 加密的 JWT（JWE） 3. 客户端将令牌作为 Bearer 令牌 发送 4...

CVE-2026-53939

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. In versions 0.6.1 through 0.6.2.5, when cjose encrypts a JWE using an AES-CBC-HMAC content-encryption algorithm A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 together with any key-management algorithm th...

CVE-2026-53938

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. Prior to version 0.6.2.5, cjose's JWE decryption path for the AES Key Wrap key-management algorithms alg = A128KW, A192KW, A256KW does not validate the length of the attacker-supplied encryptedkey JWE...

Linux Distros Unpatched Vulnerability : CVE-2026-53938

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. Prior to version 0.6.2.5, cjose's JWE decryption path for the AES K...

CVE-2026-53939

OpenIDC/cjose is a C library implementing JOSE. In versions 0.6.1 through 0.6.2.5 , when encrypting a JWE using an AES-CBC-HMAC content-encryption algorithm (A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512) with any key-management algorithm that generates a fresh CEK, the CEK is all zero bytes ins...

CVE-2026-53939 OpenIDC/cjose uses all-zero Content Encryption Key for AES-CBC-HMAC JWE encryption

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. In versions 0.6.1 through 0.6.2.5, when cjose encrypts a JWE using an AES-CBC-HMAC content-encryption algorithm A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 together with any key-management algorithm th...

CVE-2026-53939 OpenIDC/cjose uses all-zero Content Encryption Key for AES-CBC-HMAC JWE encryption

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. In versions 0.6.1 through 0.6.2.5, when cjose encrypts a JWE using an AES-CBC-HMAC content-encryption algorithm A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 together with any key-management algorithm th...

CVE-2026-53939 OpenIDC/cjose uses all-zero Content Encryption Key for AES-CBC-HMAC JWE encryption

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. In versions 0.6.1 through 0.6.2.5, when cjose encrypts a JWE using an AES-CBC-HMAC content-encryption algorithm A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 together with any key-management algorithm th...

CVE-2026-53938 OpenIDC/cjose has a heap buffer overflow in AES Key Wrap decryption (A128KW/A192KW/A256KW)

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. Prior to version 0.6.2.5, cjose's JWE decryption path for the AES Key Wrap key-management algorithms alg = A128KW, A192KW, A256KW does not validate the length of the attacker-supplied encryptedkey JWE...

CVE-2026-53938 OpenIDC/cjose has a heap buffer overflow in AES Key Wrap decryption (A128KW/A192KW/A256KW)

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. Prior to version 0.6.2.5, cjose's JWE decryption path for the AES Key Wrap key-management algorithms alg = A128KW, A192KW, A256KW does not validate the length of the attacker-supplied encryptedkey JWE...

CVE-2026-53938

OpenIDC/cjose , a C library implementing JOSE, is affected by a heap buffer overflow in its JWE decryption path for the AES Key Wrap algorithms (A128KW, A192KW, A256KW) prior to version 0.6.2.5 . The root cause is a missing length validation of the attacker-supplied encrypted_key before unwrappin...

EUVD-2026-74298

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. Prior to version 0.6.2.5, cjose's JWE decryption path for the AES Key Wrap key-management algorithms alg = A128KW, A192KW, A256KW does not validate the length of the attacker-supplied encryptedkey JWE...

PT-2026-88524

OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. In versions 0.6.1 through 0.6.2.5, when cjose encrypts a JWE using an AES-CBC-HMAC content-encryption algorithm A128CBC-HS256, A192CBC-HS384, or A256CBC-HS512 together with any key-management algorithm th...

cjose -- Heap-based Buffer Overflow

https://github.com/OpenIDC/cjose/security/advisories/GHSA-75r7-f5cv-g3wj reports: OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. Prior to version 0.6.2.5, cjose's JWE decryption path for the AES Key Wrap key-management algorithms alg = A128KW, A192KW,...

cjose -- Use of Hard-coded Cryptographic Key

https://github.com/OpenIDC/cjose/security/advisories/GHSA-f6wf-pqg3-6wqq reports: OpenIDC/cjose is a C library implementing the Javascript Object Signing and Encryption JOSE. In versions 0.6.1 through 0.6.2.5, when cjose encrypts a JWE using an AES-CBC-HMAC content-encryption algorithm...

pac4j-check v0.2.0

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。...