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.

INFO

Published Date :

2026-02-04T19:02:17.979Z

Last Modified :

2026-02-04T19:18:52.495Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-25121 vulnerability.

Vendors Products
Chainguard
  • Apko
Chainguard-dev
  • Apko
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-25121.

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact