CVE-2026-15791

Description

A crafted message in the BuildKit low-level build API can be used to remove the contents of the /tmp directory. The action that can normally be used to delete files inside the build container rootfs can escape into the real host temp directory.

References

• https://github.com/moby/buildkit/security/advisories/GHSA-32pv-7hq5-qhwq