High 7.5Published May 9, 2026

CVE-2026-42574apko dirFS has a symlink-following path traversal that allows multiple entry points to escape the build root

Updated under an hour ago (Oct 27, 2026, 6:10 AM ET)

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It affects chainguard-dev apko. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for chainguard-dev apko

Exploited in the last 30 days

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.

CVSS: 7.5 HIGH (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness (CWE): CWE-22, CWE-59
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Deferred
Record last updated: May 11, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

chainguard-dev apko chainguard_dev:apko (from the name)	from 0.14.8, < 1.2.5	CNA record

References

References

https://github.com/chainguard-dev/apko/security/advisories/GHSA-qq3r-w4hj-gjp6	x-refsource-confirm
https://github.com/chainguard-dev/apko/pull/2187	x-refsource-misc
https://github.com/chainguard-dev/apko/commit/f5a96e1299ac81c7ea9441705ec467688086f442	x-refsource-misc
https://github.com/chainguard-dev/apko/releases/tag/v1.2.5	x-refsource-misc

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.