🛡️ ALSA-2026:13643 — osbuild-composer
Description
Important: osbuild-composer security update 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): * net/url: Incorrect parsing of IPv6 host literals in net/url (CVE-2026-25679) 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.
Affected software and timeline
Affected software: osbuild-composer (fixed in 149-6.el10_1.alma.3), osbuild-composer-core (fixed in 149-6.el10_1.alma.3) and osbuild-composer-worker (fixed in 149-6.el10_1.alma.3). Published on 5 May 2026 and last revised on 6 May 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
access.redhat.com (Advisory)
access.redhat.com (Report)
bugzilla.redhat.com (Report)
errata.almalinux.org (Advisory)
Details
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| osbuild-composer | — | 149-6.el10_1.alma.3 |
| osbuild-composer-core | — | 149-6.el10_1.alma.3 |
| osbuild-composer-worker | — | 149-6.el10_1.alma.3 |
References
Similar Threats
- Unknown ALSA-2026:1380
- Unknown ALSA-2025:19566
- Unknown ALSA-2025:9844
- Unknown ALSA-2025:9623
- Unknown ALSA-2025:9634
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