CVE-2026-42574: Chainguard-Dev Apko

High severity, CVSS 7.5. EPSS: 0.5% chance of exploitation in the next 30 days.

apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before version 1.2.5, a crafted .apk could install a TypeSymlink tar entry whose target pointed outside the build root, and a subsequent directory-creation or file-write entry in the same or later archive could traverse that symlink to reach host paths the build user could write to. This issue has been patched in version 1.2.5.

Affected products

Published 2026-05-09. Last modified 2026-07-24.