Issued at: 2026-09-25
Updated at: 2026-09-25
Advisory content derived from Red Hat RHSA-2026:71543, © Red Hat, Inc., used under CC BY 4.0, with modifications.
Synopsis
Important: cockpit-image-builder security update
Description
The image-builder-frontend generates custom images suitable for deploying systems or uploading to the cloud. It integrates into Cockpit as a frontend for osbuild.
Security Fix(es):
* fast-uri: fast-uri: Server-Side Request Forgery via repeated hostname percent-decoding (CVE-2026-75899)
* fast-uri: fast-uri: Server-side request forgery via malformed IPv6 normalization (CVE-2026-75975)
* fast-uri: fast-uri: URI parsing flaw enables server-side request forgery and redirects (CVE-2026-76172)
* fast-uri: fast-uri: Authority Injection via Unvalidated Port Serialization (CVE-2026-84292)
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.