CVE-2026-25140
7.5 · HIGHOverview
CVE-2026-25140 is a high-severity vulnerability affecting chainguard apko. It was published on February 4, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
Technical 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.
Remediation
Check the references section for vendor advisories and patches from chainguard. Update apko to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| chainguard | apko | >= 0.14.8, < 1.1.1 | Affected |
Frequently Asked Questions
What is CVE-2026-25140?
CVE-2026-25140 is a high-severity vulnerability affecting chainguard apko. It was published on February 4, 2026 and has a CVSS 3.1 base score of 7.5 (HIGH).
How severe is CVE-2026-25140?
This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-25140?
Check the references section for vendor advisories and patches from chainguard. Update apko to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-25140?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-25140 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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