CVE-2026-25121 – apko is vulnerable to path traversal in apko dirFS which allows filesystem writes outside base

CVE ID : CVE-2026-25121

Published : Feb. 4, 2026, 7:02 p.m. | 16 minutes ago

Description : apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.1, a path traversal vulnerability was discovered in apko’s dirFS filesystem abstraction. An attacker who can supply a malicious APK package (e.g., via a compromised or typosquatted repository) could create directories or symlinks outside the intended installation root. The MkdirAll, Mkdir, and Symlink methods in pkg/apk/fs/rwosfs.go use filepath.Join() without validating that the resulting path stays within the base directory. This issue has been patched in version 1.1.1.

Severity: 0.0 | NA

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