CVE-2026-27962

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a JWK Header Injection vulnerability in authlib's JWS implementation allows an unauthenticated attacker to forge arbitrary JWT tokens that pass signature verification. When key=None is passed to any...

UBUNTU-CVE-2026-27962

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a JWK Header Injection vulnerability in authlib's JWS implementation allows an unauthenticated attacker to forge arbitrary JWT tokens that pass signature verification. When key=None is passed to any...

CVE-2026-27962

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a JWK Header Injection vulnerability in authlib's JWS implementation allows an unauthenticated attacker to forge arbitrary JWT tokens that pass signature verification. When key=None is passed to any...

CVE-2026-27962 Authlib JWS JWK Header Injection: Signature Verification Bypass

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.9, a JWK Header Injection vulnerability in authlib's JWS implementation allows an unauthenticated attacker to forge arbitrary JWT tokens that pass signature verification. When key=None is passed to any...

CVE-2026-27962

Authlib JWS JWK Header Injection (CVE-2026-27962) is detailed in GHSA-wvwj-cvrp-7pv5: when key=None is passed to JWS deserialization, or a key resolver returns None, the library silently uses the attacker-supplied header.jwk as the verification key, allowing forgeable tokens and bypass of authent...

EUVD-2026-12478

Authlib JWS JWK Header Injection: Signature Verification Bypass...

Authlib JWS JWK Header Injection: Signature Verification Bypass

Description Summary A JWK Header Injection vulnerability in authlib's JWS implementation allows an unauthenticated attacker to forge arbitrary JWT tokens that pass signature verification. When key=None is passed to any JWS deserialization function, the library extracts and uses the cryptographic...

Authlib 数据伪造问题漏洞

Authlib is an open-source library developed by Authlib, designed to build servers for OAuth and OpenID Connect. Versions of Authlib prior to 1.6.9 contained a data manipulation vulnerability, caused by header injection in the JWS implementation. This vulnerability could allow unauthenticated...

CVE-2026-32597

A missing verification step has been discovered in PyJWT. PyJWT does not validate the crit Critical Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a crit array listing extensions that PyJWT does not understand, the library accepts the token instead of rejecting it. This...

pyjwt 安全漏洞

pyjwt is a Python library developed by José Padilla from the United States. It allows for the encoding and decoding of JSON Web Tokens JWTs. pyjwt has security vulnerabilities, stemming from the lack of validation for the crit header parameter. This vulnerability may allow the acceptance of JWS...

Ubuntu 22.04 LTS / 24.04 LTS : Authlib vulnerabilities (USN-8065-1)

The remote Ubuntu 22.04 LTS / 24.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-8065-1 advisory. Millie Solem discovered that Authlib did not properly restrict algorithm selection during JWT verification, allowing HMAC verification with...

ROS-20260209-73-0033

A vulnerability in the JWE, JWS, JWT go-jose standards suite implementation package for the Go programming language is related to incorrect processing of highly compressed input data. Exploitation of the vulnerability could allow an attacker acting remotely to cause a denial of service...

Security Bulletin: IBM Watson Discovery Cartridge affected by vulnerability in jws-3.2.2.tgz

Summary IBM Watson Discovery Cartridge affected by vulnerability in jws-3.2.2.tgz Vulnerability Details CVEID:CVE-2025-65945 DESCRIPTION: auth0/node-jws is a JSON Web Signature implementation for Node.js. In versions 3.2.2 and earlier and version 4.0.0, auth0/node-jws has an improper signature...

Security Bulletin: IBM App Connect Enterprise is vulnerable to multiple vulnerabilities due to multiple node modules (CVE-2025-64718, CVE-2025-64756, CVE-2025-13466 & CVE-2025-65945)

Summary IBM App Connect Enterprise Connector Discovery and OpenAPI Editor, IBM App Connect Enterprise Discovery Connectors and IBM App Connect Enterprise runtime are vulnerable to multiple vulnerabilities due to node modules js-yaml, glob, body-parser and jws. Vulnerability Details...

CVE-2025-65945

CVE-2025-65945 affects auth0/node-jws (Node.js). In affected versions (3.2.2 and earlier; 4.0.0) there is an improper HS256 signature verification under specific conditions when using jws.createVerify() with user-provided header/payload data in HMAC secret lookups. IBM bulletins corroborate the i...

CVE-2025-61920

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.5, Authlib’s JOSE implementation accepts unbounded JWS/JWT header and signature segments. A remote attacker can craft a token whose base64url‑encoded header or signature spans hundreds of megabytes...

UBUNTU-CVE-2025-61920

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.5, Authlib’s JOSE implementation accepts unbounded JWS/JWT header and signature segments. A remote attacker can craft a token whose base64url‑encoded header or signature spans hundreds of megabytes...

CVE-2025-61920 Authlib is vulnerable to Denial of Service via Oversized JOSE Segments

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.5, Authlib’s JOSE implementation accepts unbounded JWS/JWT header and signature segments. A remote attacker can craft a token whose base64url‑encoded header or signature spans hundreds of megabytes...

CVE-2025-59420

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.4, Authlib’s JWS verification accepts tokens that declare unknown critical header parameters crit, violating RFC 7515 “must‑understand” semantics. An attacker can craft a signed token with a critical...

UBUNTU-CVE-2025-59420

Authlib is a Python library which builds OAuth and OpenID Connect servers. Prior to version 1.6.4, Authlib’s JWS verification accepts tokens that declare unknown critical header parameters crit, violating RFC 7515 “must‑understand” semantics. An attacker can craft a signed token with a critical...