Denial of Service Vulnerability in BuildKit by Moby
CVE-2026-93322

6.9MEDIUM

Key Information:

Vendor

Moby

Status
Buildkit
Vendor
CVE Published:
5 October 2026

What is CVE-2026-93322?

A vulnerability in Moby's BuildKit allows a malicious frontend to submit a crafted LLB definition that can cause the buildkitd daemon to panic and terminate unexpectedly. This behavior disrupts all ongoing builds, leading to potential downtimes and hindering the software development process. It is crucial to review the latest updates and implement recommended patches to mitigate the risks associated with this vulnerability.

Affected Version(s)

BuildKit 0 <= 0.33.0

References

https://github.com/moby/buildkit/security/advisories/GHSA...
vendor-advisory
https://github.com/moby/buildkit/releases/tag/v0.33.1
patch

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Haoxiang Yan (https://github.com/Yanhaoxi)
.