Is chainguard.dev/apko affected by CVE-2026-25121?

Go chainguard.dev/apko is affected in >=0.14.8 <1.1.0.

Is CVE-2026-25121 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

medium

CVE-2026-25121

Q: Is CVE-2026-25121 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

Go · chainguard.dev/apko

Summary

apko has a path traversal in apko dirFS which allows filesystem writes outside base in chainguard.dev/apko

Severity: medium
EPSS: 0.4% (p28)
Also known as: GHSA-5g94-c2wx-8pxw, GO-2026-4405
Published: 2026-02-05

References

https://github.com/chainguard-dev/apko/security/advisories/GHSA-5g94-c2wx-8pxw
https://nvd.nist.gov/vuln/detail/CVE-2026-25121
https://github.com/chainguard-dev/apko/commit/d8b7887a968a527791b3c591ae83928cb49a9f14

Related advisories

CVE-2026-42575 — high · Go/chainguard.dev/apko
CVE-2026-42574 — high · Go/chainguard.dev/apko
CVE-2026-42576 — medium · Go/chainguard.dev/apko
CVE-2026-25140 — medium · Go/chainguard.dev/apko
CVE-2026-25122 — medium · Go/chainguard.dev/apko

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.