CVE-2026-15789

Description

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.

References

• https://github.com/moby/buildkit/security/advisories/GHSA-g2h8-426c-7976