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Microsoft Security Response CenterCVE-2026-121520

Malicious client could set xattr value outside of BuildKit state directory

Medium 1 CVE Published Nov 7, 2026 at 1:01 AM UTC

Summary

Mariner

Products covered

  • azl3 docker-buildx 0.14.0-19 on Azure Linux 3.0

  • azl3 docker-compose 2.27.0-16 on Azure Linux 3.0

  • azl3 moby-engine 25.0.18-1 on Azure Linux 3.0

Remediation

Release Notes

CVEs in this advisory 1

Updates

  1. Published by Microsoft Security Response Center

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.