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 forging a...

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-2026-116585 Go JOSE: Panic during CBC-HMAC processing

Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption JWE, JSON Web Signature JWS, and JSON Web Token JWT standards. Prior to 4.1.5, decrypting untrusted JWE ciphertext with A128CBC-HS256, A192CBC-HS384...

CVE-2026-116585

The Go JOSE library (prior to version 4.1.5 ) is vulnerable to a denial of service due to a panic during CBC-HMAC processing. When decrypting untrusted JWE ciphertext using the A128CBC-HS256 , A192CBC-HS384 , or A256CBC-HS512 content-encryption algorithms, the system may pass an empty ciphertext ...

EUVD-2026-110465

Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web Encryption JWE, JSON Web Signature JWS, and JSON Web Token JWT standards. Prior to 4.1.5, decrypting untrusted JWE ciphertext with A128CBC-HS256, A192CBC-HS384...

EEF-CVE-2026-65627 Decompression bomb via unbounded zlib:inflate in jose_jwe_zip:uncompress/2

Summary Improper Handling of Highly Compressed Data Data Amplification vulnerability in potatosalad jose erlang-jose allows a remote attacker to exhaust a node's memory with a small crafted JWE token. The josejwezip:uncompress/2 function in src/jwe/josejwezip.erl decompresses the DEFLATE-compress...

EEF-CVE-2026-65625 Attacker-controlled AES-GCM authentication tag length allows tag forgery in jose

Summary The pure-Erlang AES-GCM fallback in josejwaaes derives the number of verified authentication tag bits from the attacker-supplied tag itself. In the aesgcm, Bits clause of blockdecrypt/4, the incoming tag is guarded only by isbinary/1, with no check on its length. Verification in...

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: python3 exploit.py http://IP:PORT Fetching JWKS... + Got RSA public key kid: enc-key-1 Crafted PlainJWT with sub=admin, role=ROLEADMIN + Forged JWE...

CVE-2026-29000

CVE-2026-29000: pac4j-jwt JwtAuthenticator authentication bypass Full buildout: writeup, Java in-process PoC, Python token-forge CLI and library, tests. Summary CVE: CVE-2026-29000 CVSS 10, CWE-347 Affected: pac4j-jwt 4.5.9 / 5.7.9 / 6.3.3 when using JWE + signature config Issue: JWE-wrapped...

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 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

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 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

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-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...

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

CVE-2026-29000: pac4j JWT Authentication Bypass PoC Proof of Concept for CVE-2026-29000 - A critical authentication bypass vulnerability in pac4j JWT implementation that allows attackers to forge admin tokens without a valid signature. ⚠️ DISCLAIMER This tool is provided for educational and...

PoC_CVE-2025-54887

PoCCVE-2025-54887 This repository contains Proof-of-Concept PoC exploit for CVE-2025-54887. This is a vulnerability in ruby-jwe version = 1.1.0 where the authentication tag of encrypted JWEs can be brute forced, which may result in loss of confidentiality and provide ways to craft arbitrary JWEs...

jwtear

Jwtear A modular command-line tool to parse, create and manipulate JSON Web TokenJWT tokens for security testing purposes. Features Complete modularity. All commands are plugins. Easy to add new plugins. Support JWS and JWE tokens. Easy interface for plugins. follow the template example Flexible...

CVE-2026-29000

JWT/JWE Authentication Bypass PoC A Proof-of-Concept PoC script demonstrating an authentication bypass vulnerability using JSON Web Tokens JWT and JSON Web Encryption JWE. This tool exploits environments that improperly validate token algorithms by accepting unverified JWTs alg: none wrapped insi...