CVE-2026-102946

A flaw was found in joserfc. When processing a JSON Web Signature JWS in General JSON Serialization format with an empty signatures array, the verification logic completes without validating any signatures and treats the token as valid. A remote attacker without a signing key can exploit this...

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-2026-102946

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.7.4, joserfc.jws.deserializejson accepts a JWS General JSON Serialization with an empty signatures array as authenticated. The verifygeneraljson loop performs no...

EUVD-2026-102310

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.7.4, joserfc.jws.deserializejson accepts a JWS General JSON Serialization with an empty signatures array as authenticated. The verifygeneraljson loop performs no...

CVE-2026-102946 joserfc: JWS signature verification bypass via empty signatures array in jws.deserialize_json

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.7.4, joserfc.jws.deserializejson accepts a JWS General JSON Serialization with an empty signatures array as authenticated. The verifygeneraljson loop performs no...

POC-CVE-2018-0114

CVE-2018-0114 POC A vulnerability in the Cisco node-jose open source library before 0.11.0 could allow an unauthenticated, remote attacker to re-sign tokens using a key that is embedded within the token. The vulnerability is due to node-jose following the JSON Web Signature JWS standard for JSON...

PT-2026-115112

joserfc is a Python library that provides an implementation of several JSON Object Signing and Encryption JOSE standards. Prior to 1.7.4, joserfc.jws.deserialize json accepts a JWS General JSON Serialization with an empty signatures array as authenticated. The verify general json loop performs no...

POC-CVE-2018-0114

POC-CVE-2018-0114 This repository contains the POC of an exploit for node-jose Stating from the last merge python lib: base64,urllib,rsa,sys Running the tests To run the script just run the following command: python jwk-node-jose.py "payload" key-size key-size whitout Authors Andrea Cappa -...

cve-2022-39227-jwt-auth-bypass-demo

CVE-2022-39227 JWT Authentication Bypass Demo Project Goal This project demonstrates the CVE-2022-39227 vulnerability in a controlled local lab environment. This vulnerability affects the python-jwt library versions 3.3.4 and allows an attacker to forge JWT claims without knowing the secret key b...

EulerOS 2.0 SP13 : python-jwt (EulerOS-SA-2026-4094)

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...

CVE-2025-65945-poc

CVE-2025-65945: node-jws Signature Bypass This is a proof of concept for a signature verification bypass in the node-jws library. The bug lets attackers forge valid JWTs when the server derives HMAC secrets from user-controlled data. What's the bug? The jws.createVerify function doesn't validate...

CVE-2018-0114-Exploit

CVE-2018-0114-Exploit A vulnerability in the Cisco node-jose open source library before 0.11.0 could allow an unauthenticated, remote attacker to re-sign tokens using a key that is embedded within the token. The vulnerability is due to node-jose following the JSON Web Signature JWS standard for...

PyJWT: Non-canonical signature segments enable raw-token revocation bypass

SummaryPyJWT 2.13.0 accepts compact JWS signature segments containing characters thatare not in the Base64URL alphabet. Appending !!!! to a valid signature doesnot change the decoded signature bytes or authenticated claims, but it changesthe serialized token and its SHA-256 hash. An application...

PYSEC-2026-4147 PyJWT: Non-canonical signature segments enable raw-token revocation bypass

Summary PyJWT 2.13.0 accepts compact JWS signature segments containing characters that are not in the Base64URL alphabet. Appending !!!! to a valid signature does not change the decoded signature bytes or authenticated claims, but it changes the serialized token and its SHA-256 hash. An applicati...

PT-2026-105893

Summary PyJWT 2.13.0 accepts compact JWS signature segments containing characters that are not in the Base64URL alphabet. Appending !!!! to a valid signature does not change the decoded signature bytes or authenticated claims, but it changes the serialized token and its SHA-256 hash. An applicati...

AlmaLinux 9.2 [TuxCare] Security Update: osbuild-composer / osbuild-composer-core / etc (ALMALINUX9.2:CLSA-2025:1764152728)

The AlmaLinux 9.2 host has packages installed that are affected by a vulnerability as referenced in the TuxCare ALMALINUX9.2:CLSA-2025:1764152728 advisory. - Go JOSE provides an implementation of the Javascript Object Signing and Encryption set of standards in Go, including support for JSON Web...

Rocky Linux 10.0 [CIQ] Security Update: opentelemetry-collector Multiple Vulnerabilities (crlsa-2025_7479)

The Rocky Linux 10.0 host has a package installed that is affected by multiple vulnerabilities as referenced in the CIQ crlsa-20257479 advisory. go-jose: Go JOSE's Parsing Vulnerable to Denial of Service CVE-2025-27144 golang.org/x/oauth2/jws: Unexpected memory consumption during token parsing in...

PyJWT: Non-canonical signature segments enable raw-token revocation bypass

Summary PyJWT 2.13.0 accepts compact JWS signature segments containing characters that are not in the Base64URL alphabet. Appending !!!! to a valid signature does not change the decoded signature bytes or authenticated claims, but it changes the serialized token and its SHA-256 hash. An applicati...

GHSA-HXM8-2XGR-2P9M PyJWT: Non-canonical signature segments enable raw-token revocation bypass

Summary PyJWT 2.13.0 accepts compact JWS signature segments containing characters that are not in the Base64URL alphabet. Appending !!!! to a valid signature does not change the decoded signature bytes or authenticated claims, but it changes the serialized token and its SHA-256 hash. An applicati...

Improper Verification of Cryptographic Signature

Overview authlib is a library in building OAuth and OpenID Connect servers. Affected versions of this package are vulnerable to Improper Verification of Cryptographic Signature via the JsonWebSignature.deserializejson method in the JWS JSON serialization handling. An attacker can have unsigned or...