Vulnerability 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, an attacker who controls or compromises an APK repository used by apko could cause resource exhaustion on the build host. The ExpandApk function in pkg/apk/expandapk/expandapk.go expands .apk streams without enforcing decompression limits, allowing a malicious repository to serve a small, highly-compressed .apk that inflates into a large tar stream, consuming excessive disk space and CPU time, causing build failures or denial of service. This issue has been patched in version 1.1.1.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Chainguard | Apko | >= 0.14.8, < 1.1.1 |
Related Weaknesses (CWE)
References
- https://github.com/chainguard-dev/apko/commit/2be3903fe194ad46351840f0569b35f5acPatch
- https://github.com/chainguard-dev/apko/security/advisories/GHSA-f4w5-5xv9-85f6Third Party Advisory
FAQ
What is CVE-2026-25140?
CVE-2026-25140 is a vulnerability with a CVSS score of 7.5 (HIGH). apko allows users to build and publish OCI container images built from apk packages. From version 0.14.8 to before 1.1.1, an attacker who controls or compromises an APK repository used by apko could c...
How severe is CVE-2026-25140?
CVE-2026-25140 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-25140?
Check the references section above for vendor advisories and patch information. Affected products include: Chainguard Apko.