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High8.0Red Hat Linux

High [CVE-2026-3012] group policy certificate enrollment uses http:// without validation

This high-severity Red Hat Linux advisory covers CVE-2026-3012 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On.

CVE-2026-3012 Published May 27, 2026
CVE-2026-3012
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

group policy certificate enrollment uses http:// without validation. Red Hat rates this important (CVSS 8).

Weakness: CWE-345. Affected package(s): samba, rhcos.

Resolved in Red Hat advisory RHSA-2026:29863 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; and 6 more.

Affected versions
  • samba-0:4.23.5-109.el10_2
  • samba-0:4.17.5-7.el8_8.1
  • samba-0:4.19.4-16.el8_10
  • samba-0:4.21.3-14.el9_6.1
  • samba-0:4.19.4-105.el9_4.4
  • rhcos-4.19.9.6.202606241344-0
  • samba-0:4.17.5-105.el9_2.5
  • samba-0:4.23.5-10.el9_8
  • samba-0:4.21.3-114.el10_0.1
  • samba-0:4.15.5-16.el8_6.1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions
  • RHSA-2026:29863

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • Update the affected package(s) to the fixed version shipped in RHSA-2026:29863 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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