CVE-2026-75593
BuildKit: Malicious client can bypass destination directory validation on local sources upload
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.2, 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 BuildKit control API to issue builds, eg., bypass authentication, etc. This issue is fixed in version 0.31.2.
| CWE | CWE-22 |
| Vendor | moby |
| Product | buildkit |
| Published | Aug 19, 2026 |
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Affected Versions
moby / buildkit
< 0.31.2