CVE-2026-42574

apko dirFS has a symlink-following path traversal that allows multiple entry points to escape the build root

State: Published
Severity: 7.5 High
Published: May 9, 2026
Updated: May 11, 2026
Reserved: Apr 28, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N	GitHub_M

Weaknesses

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CWE-59 Improper Link Resolution Before File Access ('Link Following')

Affected Products

Product	Versions
apkochainguard-dev	>= 0.14.8, < 1.2.5Affected

References

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