Amazon Linux 2023 Security Advisory: ALAS2023-2026-1519
Advisory Released Date: 2026-04-01
Advisory Updated Date: 2026-04-01
Severity:
Medium
Issue Overview:
A missing verification step has been discovered in PyJWT. PyJWT does not validate the crit (Critical) Header Parameter defined in RFC 7515 SS4.1.11. 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 violates the MUST requirement in the RFC. (CVE-2026-32597)
Affected Packages:
python-jwt
Issue Correction:
Run dnf update python-jwt --releasever 2023.10.20260330 or dnf update --advisory ALAS2023-2026-1519 --releasever 2023.10.20260330 to update your system.
More information on how to update your system can be found on this page: Amazon Linux 2023 documentation
New Packages:
noarch:
python3-jwt+crypto-2.4.0-1.amzn2023.0.3.noarch
python3-jwt-2.4.0-1.amzn2023.0.3.noarch
src:
python-jwt-2.4.0-1.amzn2023.0.3.src