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...

jwt-key-confusion-poc

JWT Key Confusion PoC CVE-2015-9235 Written for the Hack the Box challenges - Under Construction and Secret Both included scripts perform a Java Web Token Key Confusion Attack CVE-2015-9235. To perform the attack it is required that the attacker know the public key which the server will use to...

jwtXploiter

jwtXploiter A tool to test security of JSON Web Tokens. Test a JWT against all known CVEs; Tamper with the token payload: changes claims and subclaims values. Exploit known vulnerable header claims kid, jku, x5u Verify a token Retrieve the public key of your target's ssl connection and try to use...

CVE-2015-9235_JWT_key_confusion

ENGLISH Description This application allows you to replace a value in a JSON Web Token JWT using the HMAC-SHA256 method to recalculate the signature. It takes as input a token, a key to replace, and the new value associated with that key. Usage Clone or download the application's source code. git...

CVE-2018-0114-PoC

CVE-2018-0114 PoC Wrote this for PentesterLab If you are from PentesterLab's don't cheat, it's alot better to learn. Hope it's useful to someone, if not to me in the future : Example $ python3 script.py Making keys... 'alg': 'RS256', 'jwk': 'kty': 'RSA', 'kid': '[email protected]', 'use':...

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...

PYSEC-2026-4149 PyJWT: Public keys in DER form are accepted as HMAC secrets, bypassing the CVE-2022-29217 guard

Summary HMACAlgorithm.preparekey blocks asymmetric keys from being used as HMAC secrets by searching for text markers only. It looks for -----BEGIN and for an ssh- prefix. The same key in DER form is binary ASN.1 and has neither marker, so it passes the check and is used as an HMAC secret. An...

PyJWT: Public keys in DER form are accepted as HMAC secrets, bypassing the CVE-2022-29217 guard

SummaryHMACAlgorithm.preparekey blocks asymmetric keys from being used as HMAC secrets by searching for text markers only. It looks for -----BEGIN and for an ssh- prefix. The same key in DER form is binary ASN.1 and has neither marker, so it passes the check and is used as an HMAC secret.An...

PyJWT: Public keys in DER form are accepted as HMAC secrets, bypassing the CVE-2022-29217 guard

Summary HMACAlgorithm.preparekey blocks asymmetric keys from being used as HMAC secrets by searching for text markers only. It looks for -----BEGIN and for an ssh- prefix. The same key in DER form is binary ASN.1 and has neither marker, so it passes the check and is used as an HMAC secret. An...

GHSA-P4G4-X82P-Q773 PyJWT: Public keys in DER form are accepted as HMAC secrets, bypassing the CVE-2022-29217 guard

Summary HMACAlgorithm.preparekey blocks asymmetric keys from being used as HMAC secrets by searching for text markers only. It looks for -----BEGIN and for an ssh- prefix. The same key in DER form is binary ASN.1 and has neither marker, so it passes the check and is used as an HMAC secret. An...

CVE-2026-102268

The PyJWT library (versions prior to 2.14.0 ) contains a vulnerability in jwt/utils.py where the is_pem_format function fails to recognize certain PEM representations accepted by the cryptography loader. This occurs when applications mixing HMAC and asymmetric algorithms provide mutated public-ke...

EulerOS 2.0 SP10 : python-jwt (EulerOS-SA-2026-3714)

According to the versions of the python-jwt packages installed, the EulerOS installation on the remote host is affected by the following vulnerabilities : PyJWT is a JSON Web Token implementation in Python. Prior to 2.12.0, PyJWT does not validate the crit Critical Header Parameter defined in RFC...

Astra Linux – Vulnerability in ujson

UltraJSON is a fast JSON encoder and decoder written in pure C, with bindings for Python 3.7+. It was found that affected versions incorrectly decoded certain characters. JSON strings containing escaped surrogate characters that were not part of a valid surrogate pair were decoded incorrectly. Th...

NewStart CGSL MAIN 7.02 : python-PyJWT Multiple Vulnerabilities (NS-SA-2026-0091)

The remote NewStart CGSL host, running version MAIN 7.02, has python-PyJWT packages installed that are affected by multiple vulnerabilities: - PyJWT is a JSON Web Token implementation in Python. Prior to 2.12.0, PyJWT does not validate the crit Critical Header Parameter defined in RFC 7515 4.1.11...

CVE-2020-7494

creationtimestamp| type| source ---|---|--- 2026-09-01 17:01:12+00:00| seen| https://t.me/cissp/1528 2026-09-02 01:05:01+00:00| seen| https://t.me/cissp/1528 2026-09-12 01:00:05+00:00| published-proof-of-concept| https://t.me/cissp/1528 2026-09-13 00:01:01+00:00| published-proof-of-concept|...

CVE-2026-58432

The Gitea application (code.gitea.io/gitea) is vulnerable to Missing Authorization and Authorization Bypass issues. These flaws can be triggered through a user-controlled key or incorrect permission assignments for critical resources, potentially leading to the exposure of sensitive information t...

Security Bulletin: IBM InfoSphere Optim Archive Viewer is affected by a vulnerability in Next.js (CVE-2025-57752 and CVE-2025-55173)

Summary The vulnerabilities CVE-2025-57752 Cache Key Confusion / Cache Deception and CVE-2025-55173 Content Injection / Arbitrary File Delivery in the Next.js framework have been completely resolved by upgrading the dependency from version 14.2.26 to 15.5.15. Vulnerability Details...

CVE-2026-33496

ORY Oathkeeper is an Identity & Access Proxy IAP and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. Versions prior to 26.2.0 are vulnerable to authentication bypass due to cache key confusion. The oauth2introspection authenticator cache does not distingui...

CVE-2026-33496

ORY Oathkeeper is an Identity & Access Proxy IAP and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. Versions prior to 26.2.0 are vulnerable to authentication bypass due to cache key confusion. The oauth2introspection authenticator cache does not distingui...

CVE-2026-33496 Ory Oathkeeper has an authentication bypass by cache key confusion

ORY Oathkeeper is an Identity & Access Proxy IAP and Access Control Decision API that authorizes HTTP requests based on sets of Access Rules. Versions prior to 26.2.0 are vulnerable to authentication bypass due to cache key confusion. The oauth2introspection authenticator cache does not distingui...