cve-2026-102268-poc

CVE-2026-102268 — PyJWT Asymmetric-PEM Detection Bypass Exploitability analysis result: the root cause is confirmed and end-to-end exploitation is reproducible. A whitespace-mutated PEM public key bypasses PyJWT's ispemformat guard and is accepted as a valid HMAC secret, enabling full HS256 token...

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...

POC_CVE-2015-9235

CVE-2015-9235 Demonstration of the algorithm confusion attack on Json Web Token JWT libraries. JWTs are often used in cookies to certify a user session and so this attack is critical. The node module [email protected] was used to demonstrate the vulnerability. This project was also a nice vi...

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...

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...

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...

CVE-2026-5430

abraxaslabs.tech · github.com/abraxas · @abraxasnull · [email protected] · CVE-2026-5430 Write-up: https://abraxaslabs.tech/research/CVE-2026-5430 CVE-2026-5430 WSO2 API Manager 4.5.0 - WSO2 I am @abraxasnull. Loopback lab. The client is CVE-2026-5430-Abraxas-Labs.py. JWT alg mix-up...

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...

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...

ClaimJumper

/ | | | | | | | | | | | | | |/ | | ' \ | | | | | ' | ' \ / \ '| | || | | | | | | | | || | || | | | | | | | | / | ||,||| || ||/ |,|| || || ./ || |/ | | || v0.1.0 Professional JWT security testing toolkit. Analyze, crack, forge, and exploit JSON Web Tokens with 15+ vulnerability checks, 100k...

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...

GHSA-7VR2-2FGP-9W7P Authlib incomplete algorithm-confusion fix permits HMAC forgery with prefixed public keys

Summary OctKey.importkey carries the only guard that stops an asymmetric public key from being used as an HMAC secret in authlib.jose. That guard is rawkey.startswithPOSSIBLEUNSAFEKEYS — anchored at byte 0 — while the loader that consumes the identical bytes on the asymmetric path...

Authlib incomplete algorithm-confusion fix permits HMAC forgery with prefixed public keys

Summary OctKey.importkey carries the only guard that stops an asymmetric public key from being used as an HMAC secret in authlib.jose. That guard is rawkey.startswithPOSSIBLEUNSAFEKEYS — anchored at byte 0 — while the loader that consumes the identical bytes on the asymmetric path...

CVE-2026-114615

The Python library Authlib (versions 1.3.1 to 1.9.0) is vulnerable to a security bypass where an unauthenticated attacker can forge HS256 tokens with arbitrary identity or authorization claims. The root cause lies in authlib/jose/rfc7518/oct_key.py, where OctKey.import_key() fails to correctly id...

PYSEC-2026-4298 python-jose algorithm confusion guard bypassed by DER-encoded public keys

python-jose through 3.5.0 fails to properly validate asymmetric keys in HMAC initialization, accepting DER-encoded public keys that lack PEM armor or SSH prefixes. Attackers holding the service's public key can forge HS256 tokens that pass verification when algorithms are not explicitly restricte...

NPM: fast-jwt: Incomplete patch of CVE-2026-34950: Non-whitespace key-prefix re-enables RSA→HS256 algorithm confusion

NPM: fast-jwt: Incomplete patch of CVE-2026-34950: Non-whitespace key-prefix re-enables RSA→HS256 algorithm confusion vulnerability discovered by ? in WordPress Npm fast-jwt versions = 6.2.0, = 6.2.4...

fast-jwt: Incomplete patch of CVE-2026-34950: Non-whitespace key-prefix re-enables RSA→HS256 algorithm confusion

Summary The fix for CVE-2026-34950 CVSS 9.1, released in v6.2.0 is incomplete. It adds key.trim to the PEM-detection path in src/crypto.js, but String.prototype.trim only strips characters classified as whitespace by the ECMAScript specification. The subsequent ^-anchored regex /^-----BEGIN?: RSA...

GHSA-WW5H-9M49-7XX4 fast-jwt: Incomplete patch of CVE-2026-34950: Non-whitespace key-prefix re-enables RSA→HS256 algorithm confusion

Summary The fix for CVE-2026-34950 CVSS 9.1, released in v6.2.0 is incomplete. It adds key.trim to the PEM-detection path in src/crypto.js, but String.prototype.trim only strips characters classified as whitespace by the ECMAScript specification. The subsequent ^-anchored regex /^-----BEGIN?: RSA...

EUVD-2026-95347

fast-jwt provides fast JSON Web Token JWT implementation. From 6.2.0 until 6.3.0, fast-jwt can misclassify RSA public-key text as an HMAC secret when the key has non-whitespace content before its PEM header. In src/crypto.js, performDetectPublicKeyAlgorithms trims whitespace but publicKeyPemMatch...

CVE-2026-107722 fast-jwt: Incomplete patch of CVE-2026-34950: Non-whitespace key-prefix re-enables RSA→HS256 algorithm confusion

fast-jwt provides fast JSON Web Token JWT implementation. From 6.2.0 until 6.3.0, fast-jwt can misclassify RSA public-key text as an HMAC secret when the key has non-whitespace content before its PEM header. In src/crypto.js, performDetectPublicKeyAlgorithms trims whitespace but publicKeyPemMatch...