54 matches found
CVE-2026-89317
The gose library is vulnerable because JwtVerifierImpl.Verify fails to enforce the JWS crit header as required by RFC 7515 §4.1.11 . While the library correctly parses the crit header into JwsHeader.Crit, it fails to act on it. Since gose does not implement header extensions, any token containing...
EUVD-2026-108649
gose parsed the JWS crit header into JwsHeader.Crit and then never read it. RFC 7515 §4.1.11 requires a recipient to reject a JWS whose listed critical extension parameters it does not understand. gose implements no header extensions, so every token carrying a non-empty crit should have been...
CVE-2026-89317 JwtVerifierImpl.Verify does not enforce the JWS `crit` header (RFC 7515 §4.1.11)
gose parsed the JWS crit header into JwsHeader.Crit and then never read it. RFC 7515 §4.1.11 requires a recipient to reject a JWS whose listed critical extension parameters it does not understand. gose implements no header extensions, so every token carrying a non-empty crit should have been...
Astra Linux – Vulnerability in pyjwt
PyJWT is an implementation of JSON Web Tokens in Python. Before version 2.12.0, PyJWT did not validate the Critical Header Parameter defined in RFC 7515 §4.1.11. When a JWS token contains a critical array listing extensions that PyJWT does not understand, the library accepts the token instead of...
EulerOS 2.0 SP11 : python-jwt (EulerOS-SA-2026-3091)
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...
EulerOS 2.0 SP11 : python-jwt (EulerOS-SA-2026-3145)
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...
OESA-2026-3117 python-jwt security update
rm -f tests/testjwksclient.py -m pytest %endif Security Fixes: 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. When a JWS token contains a crit array listing extensions that PyJWT does not...
PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)
...
EulerOS 2.0 SP12 : python-jwt (EulerOS-SA-2026-2557)
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...
PYSEC-2026-1200 Authlib: JWS/JWT accepts unknown crit headers (RFC violation → possible authz bypass)
Summary 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 header for example, bork or cnf that strict verifiers reject but Authlib accepts. In...
RockyLinux 10 : fence-agents (RLSA-2026:19138)
The remote RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:19138 advisory. pyjwt: PyJWT accepts unknown crit header extensions RFC 7515 ?4.1.11 MUST violation CVE-2026-32597 pyasn1: pyasn1 Vulnerable to Denial of Service via...
pyjwt: PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)
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: PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)
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...
RHEL 9 : fence-agents (RHSA-2026:21431)
The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:21431 advisory. The fence-agents packages provide a collection of scripts for handling remote power management for cluster devices. They allow failed or...
pyjwt: PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)
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: PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)
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: PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)
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...
AlmaLinux 10 : fence-agents (ALSA-2026:13916)
The remote AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:13916 advisory. pyjwt: PyJWT accepts unknown crit header extensions RFC 7515 ?4.1.11 MUST violation CVE-2026-32597 pyasn1: pyasn1 Vulnerable to Denial of Service via...
[SECURITY] [DLA 4564-1] pyjwt security update
Debian LTS Advisory DLA-4564-1 [email protected] https://www.debian.org/lts/security/ Jochen Sprickerhof May 05, 2026 https://wiki.debian.org/LTS Package : pyjwt Version : 1.7.1-2+deb11u1 CVE ID : CVE-2026-32597 It was discovered that PyJWT, a Python implementation of JSON Web Token did...
pyjwt: PyJWT accepts unknown `crit` header extensions (RFC 7515 §4.1.11 MUST violation)
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...