CVE-2026-25121 (GCVE-0-2026-25121)

Vulnerability from cvelistv5 – Published: 2026-02-04 19:02 – Updated: 2026-02-04 19:18
VLAI
Title
apko is vulnerable to path traversal in apko dirFS which allows filesystem writes outside base
Summary
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
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-02-04 19:18 UTC
CWE
  • CWE-23 - Relative Path Traversal
Assigner
GitHub_M CNA under the mitre root
CNA scorecard C 72/100 over 7895 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
chainguard-dev apko Affected: >= 0.14.8, < 1.1.1
guessed Create a notification for this product.
Show details on NVD website
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