A malicious frontend can submit an LLB definition that causes buildkitd
to panic and terminate, interrupting all builds running on that daemon.

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Fixes

Solution

No solution given by the vendor.


Workaround

Avoid using external BuildKit frontends from untrusted sources. Dockerfile builds are unaffected.

History

Tue, 06 Oct 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 05 Oct 2026 23:45:00 +0000

Type Values Removed Values Added
First Time appeared Moby
Moby buildkit
Vendors & Products Moby
Moby buildkit

Mon, 05 Oct 2026 22:15:00 +0000

Type Values Removed Values Added
Description A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting all builds running on that daemon.
Title Malformed LLB file operation can crash buildkitd
Weaknesses CWE-129
References
Metrics cvssV4_0

{'score': 6.9, 'vector': '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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Docker

Published:

Updated: 2026-10-06T13:25:37.712Z

Reserved: 2026-09-17T17:18:08.293Z

Link: CVE-2026-93321

cve-icon Vulnrichment

Updated: 2026-10-06T13:25:32.959Z

cve-icon NVD

Status : Received

Published: 2026-10-05T22:16:58.960

Modified: 2026-10-06T14:17:48.753

Link: CVE-2026-93321

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-05T23:45:18Z

Weaknesses