An update for osbuild-composer is now available for Red Hat Enterprise Linux
 9.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of
 Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

A service for building customized OS artifacts, such as VM images and OSTree
 commits, that uses osbuild under the hood. Besides building images for local usage, it can also upload images directly to cloud.  It is compatible with composer-cli and cockpit-composer clients.

Security Fix(es):

* golang-jwt/jwt: jwt-go allows excessive memory allocation during header
 parsing (CVE-2025-30204)

For more details about the security issue(s), including the impact, a CVSS
 score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2025-30204: Asymmetric Resource Consumption (Amplification) (CWE-405)