Medium [CVE-2026-15789] custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory
This medium-severity Docker advisory covers CVE-2026-15789 affecting BuildKit.
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Summary
A custom client can produce such an upload request to the BuildKit daemon that files can escape from the BuildKit-controlled state directory. The client needs to have valid permissions to access the BuildKit control API to issue builds, e.g., bypass authentication, etc.
- BuildKit before 0.31.2
NVD record · high-confidence parse· fetched 2 months ago·verify at source
Mitigation
Upgrade to a fixed release: 0.31.2. That is the remediation for this advisory.
The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.
NVD record · high-confidence parse· fetched 2 months ago·verify at source
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