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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
chainguard-dev apko affected
Version Status Constraints
>= 0.14.8, < 1.2.5 affected —

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories
Source ID Title
Github GHSA Github GHSA GHSA-qq3r-w4hj-gjp6 apko dirFS has a symlink-following path traversal that allows multiple entry points to escape the build root
Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/chainguard-dev/apko/commit/f5a96e1299ac81c7ea9441705ec467688086f442 cve-icon
https://github.com/chainguard-dev/apko/pull/2187 cve-icon
https://github.com/chainguard-dev/apko/releases/tag/v1.2.5 cve-icon
https://github.com/chainguard-dev/apko/security/advisories/GHSA-qq3r-w4hj-gjp6 cve-icon
History

Sat, 09 May 2026 19:45:00 +0000

Type Values Removed Values Added
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.
Title apko dirFS has a symlink-following path traversal that allows multiple entry points to escape the build root
Weaknesses CWE-22
CWE-59
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N'}

Projects

Sign in to view the affected projects.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-05-09T19:24:48.497Z

Reserved: 2026-04-28T17:26:12.085Z

Link: CVE-2026-42574

cve-icon Vulnrichment

No data.

cve-icon NVD

No data.

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses