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VulnerabilityPublished Updated

CVE-2025-27144: osbuild-composer security update

Affects osbuild-composerSource GCVE Database

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Not known to be exploited : upgrade to 134.1-3.el10_0.alma.1 when convenient.

Data as of 4 Nov 2026, 18:42 UTC

Severity
Medium

Rated Medium by Threat Radar's AI analysis · No CVSS score from NVD or the CNA

Patch
Available – fixed in 134.1-3.el10_0.alma.1

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 4 Nov 2025

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 4 Nov 2026.

What to do

Upgrade the AlmaLinux to 134.1-3.el10_0.alma.1.

Affected software

ProductAffectedFixed in
AlmaLinux 10osbuild-composerAffected
  • <134.1-3.el10_0.alma.1
Fixed in
  • 134.1-3.el10_0.alma.1
AlmaLinux 10osbuild-composer-coreAffected
  • <134.1-3.el10_0.alma.1
Fixed in
  • 134.1-3.el10_0.alma.1
AlmaLinux 10osbuild-composer-workerAffected
  • <134.1-3.el10_0.alma.1
Fixed in
  • 134.1-3.el10_0.alma.1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

A security update fixing this vulnerability is available and should be applied. The fixed version is 134.1-3.el10_0.alma.1. Administrators should update osbuild-composer to this version or later to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.

Description

A moderate severity vulnerability (CVE-2025-27144) affects osbuild-composer, a service used to build customized OS artifacts including VM images and OSTree commits. The vulnerability is in the go-jose library used by osbuild-composer, where parsing is vulnerable to a denial of service condition. This issue could potentially disrupt the service's ability to build or upload images. A security update fixing this vulnerability is available in version 134.1-3.el10_0.alma.1.

References

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