REDHAT-BUG-2519913: Medium severity Moby BuildKit vulnerability
Published Aug 19, 2026
·Updated
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.
Affected Software
1 affected component
Moby BuildKit<0.31.2
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
BuildKitto a version that resolves this vulnerability.Fixed in 0.31.2
Event History
Aug 19, 2026
Data Sourced
via Red Hat·08:21 PM
DescriptionSeverityAffected Software