CVE-2026-93321
6.9
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting all builds running on that daemon.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| moby | BuildKit | 0 <= 0.33.0 | affected |
Weaknesses
- CWE-129: CWE-129: Improper Validation of Array Index
Workarounds
Avoid using external BuildKit frontends from untrusted sources. Dockerfile builds are unaffected.
References
- https://github.com/moby/buildkit/security/advisories/GHSA-fjj4-h6vf-m9hj
- https://github.com/moby/buildkit/releases/tag/v0.33.1
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