Improper Certificate Validation Affecting image-builder package, versions <0:31-3.el9_7


Severity

Recommended
high

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
0.49% (43rd percentile)

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  • Snyk IDSNYK-ALMALINUX9-IMAGEBUILDER-16427292
  • published6 May 2026
  • disclosed25 Feb 2026

Introduced: 25 Feb 2026

CVE-2025-61729  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:9 image-builder to version 0:31-3.el9_7 or higher.
This issue was patched in ALSA-2026:3839.

NVD Description

Note: Versions mentioned in the description apply only to the upstream image-builder package and not the image-builder package as distributed by AlmaLinux. See How to fix? for AlmaLinux:9 relevant fixed versions and status.

Within HostnameError.Error(), when constructing an error string, there is no limit to the number of hosts that will be printed out. Furthermore, the error string is constructed by repeated string concatenation, leading to quadratic runtime. Therefore, a certificate provided by a malicious actor can result in excessive resource consumption.

References

CVSS Base Scores

version 3.1