RS256-2-HS256

RS256-2-HS256 JWT Attack to change the algorithm RS256 to HS256 Usage usage: RS2562HS256JWT.py -h payload pubkey positional arguments: payload JSON payload from JWT to attack pubkey Public key file to use for signing optional arguments: -h, --help show this help message and exit Example...

poc-cve-2016-10555

Change the algorithm RS256asymmetric to HS256symmetric - POC CVE-2016-10555 The algorithm HS256 uses the secret key to sign and verify each message. The algorithm RS256 uses the private key to sign the message and uses the public key for authentication. If you change the algorithm from RS256 to...

TokenBreaker

TokenBreaker Token Breaker is focused on 2 particular vulnerability related to JWT tokens. None Algorithm RSAtoHMAC Refer to this link about insights of the vulnerability and how an attacker can forge the tokens Try out this vulnerability here TheNone Usage usage: TheNone.py -h -t TOKEN...

PyJWT accepts public JWK containers as HMAC secrets

SummaryPyJWT 2.13.0 contains an incomplete defense against algorithm confusion whenan application mixes symmetric and asymmetric algorithms in one verificationpath. A public RSA, EC, or OKP JWK can be accepted as an HMAC secret when itis wrapped in a JWKS object, nested in an array, or represente...

PyJWT BOM Bypass

Affected Package- Package: PyJWT pyjwt on PyPI- Repository: https://www.google.com/url?q=https://github.com/jpadilla/pyjwt=gmail=1781794518474000=E- Affected version: 2.13.0- Vulnerability class: Algorithm confusion / patch bypass--- Root CausePyJWT 2.13.0 introduced a guard in...

CVE-2026-15013

CVE-2026-15013 — miniOrange SAML SSO = 5.4.3 Auth Bypass PoC Proof-of-concept for CVE-2026-15013 : unauthenticated authentication bypass via SAML Signature Algorithm Confusion HMAC-SHA1 in the miniOrange SAML Single Sign On – SSO Login WordPress plugin versions up to and including 5.4.3. Authoriz...

ClaimJumper

/ | | | | | | | | | | | | | |/ | | ' \ | | | | | ' | ' \ / \ '| || | | | | | | | | | || | || | | | | | | | | / | ||,||| || ||/ |,|| || || ./ || |/ | | || v0.1.0 Kit de test de sécurité JWT professionnel. Analysez, craquez, forgez et exploitez les JSON Web Tokens avec plus de 15 vérifications...

GHSA-W2CX-738M-MC7W PyJWT accepts public JWK containers as HMAC secrets

Summary PyJWT 2.13.0 contains an incomplete defense against algorithm confusion when an application mixes symmetric and asymmetric algorithms in one verification path. A public RSA, EC, or OKP JWK can be accepted as an HMAC secret when it is wrapped in a JWKS object, nested in an array, or...

PyJWT accepts public JWK containers as HMAC secrets

Summary PyJWT 2.13.0 contains an incomplete defense against algorithm confusion when an application mixes symmetric and asymmetric algorithms in one verification path. A public RSA, EC, or OKP JWK can be accepted as an HMAC secret when it is wrapped in a JWKS object, nested in an array, or...

PyJWT BOM Bypass

Affected Package - Package: PyJWT pyjwt on PyPI - Repository: https://www.google.com/url?q=https://github.com/jpadilla/pyjwt&source=gmail&ust=1781794518474000&sa=E - Affected version: 2.13.0 - Vulnerability class: Algorithm confusion / patch bypass --- Root Cause PyJWT 2.13.0 introduced a guard i...

GHSA-R6X4-923Q-G947 PyJWT BOM Bypass

Affected Package - Package: PyJWT pyjwt on PyPI - Repository: https://www.google.com/url?q=https://github.com/jpadilla/pyjwt&source=gmail&ust=1781794518474000&sa=E - Affected version: 2.13.0 - Vulnerability class: Algorithm confusion / patch bypass --- Root Cause PyJWT 2.13.0 introduced a guard i...

CVE-2026-0265-check

CVE-2026-0265 Vulnerability Assessment Tool Safely determine whether a Palo Alto Networks PAN-OS GlobalProtect portal is vulnerable to CVE-2026-0265 without authenticating any session or modifying any state. Description CVE-2026-0265 is a remote authentication bypass affecting PAN-OS and Panorama...

Improper Verification of Cryptographic Signature

Overview PyJWT is a Python implementation of RFC 7519. Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the preparekey method in jwt/algorithms.py, where a public JWK container such as a JWK Set with a kty member nested inside a JSON array o...

CVE-2026-4444-JWT-Algorithm-Confusion-via-kid-Injection

CVE-2026-4444 – JWT Algorithm Confusion via kid Injection Program Code Node.js server + Python exploit // jwtserver.js - Vulnerable JWT verification server const express = require'express'; const jwt = require'jsonwebtoken'; const jwksClient = require'jwks-rsa'; const axios = require'axios'; cons...

CVE-2026-5430

abraxaslabs.tech · github.com/abraxas · @abraxasnull · CVE-2026-5430 CVE-2026-5430 WSO2 API Manager 4.5.0 — WSO2 The JWT authentication mechanism accepts tokens signed with algorithms other than those explicitly configured or supported. This allows an attacker to craft a JWT with an unsupported...

CVE-2026-78903-SWIFT-Kick-to-the-Creds

CVE-2026-78903 — SWIFT Kick to the Creds SWIFT API Gateway JWT Algorithm Confusion Field| Value ---|--- Severity| 9.1 Critical Vector| Network Affected Versions| 3.2.0 – 3.2.4 Discovered By| 𝕍𝕠𝕤𝕤🥷 Description A critical misconfiguration in the SWIFT API Gateway allows an attacker to craft a JWT...

POC_CVE-2015-9235

CVE-2015-9235 Démonstration de l'attaque par confusion d'algorithme sur les bibliothèques Json Web Token JWT. Les JWT sont souvent utilisés dans les cookies pour certifier une session utilisateur, donc cette attaque est critique. Le module Node [email protected] a été utilisé pour démontrer ...

CVE-2023-48223

CVE-2023-48223 PoC fast-jwt Algorithm Confusion This repository demonstrates JWT algorithm confusion in fast-jwt when token verification does not lock allowed algorithms. Environment Setup Requirements Node.js 18 or newer npm OpenSSL must be available in your terminal PATH 1 Install dependencies...

Unity Linux 20.1050e / 20.1060e / 20.1070e Security Update: python-jwt (UTSA-2026-054077)

The Unity Linux 20 host has a package installed that is affected by a vulnerability as referenced in the UTSA-2026-054077 advisory. PyJWT is a Python implementation of RFC 7519. PyJWT supports multiple different JWT signing algorithms. With JWT, an attacker submitting the JWT token can choose the...

CVE-2026-14916 Kong API Gateway Enterprise: JWT Algorithm-Confusion

A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for...