CVE-2026-93319: CWE-567: Unsynchronized Access to Shared Data in a Multi-threaded Context in moby BuildKit
Description
A malicious external BuildKit frontend can send requests using the internal API that can create conditions for a data race that can cause the BuildKit daemon to panic.
CVSS v4.0
Score 5.7medium
Affected software
moby
BuildKit
pkg:github/github.com/moby/buildkitRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-567) in moby BuildKit allows a malicious external frontend to send requests through the internal API that create conditions for a data race. This unsynchronized access to shared data in a multi-threaded environment can cause the BuildKit daemon to panic, disrupting normal operation. The affected versions are from 0 up to and including 0.33.0. The CVSS 4.0 base score is 5.7, indicating medium severity with local attack vector, low attack complexity, and partial privileges required.
Potential Impact
Exploitation can cause the BuildKit daemon to panic, leading to denial of service or disruption of build processes. There is no indication of code execution or data leakage. No known exploits are reported in the wild.
Mitigation Recommendations
No patch or official fix information is provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to BuildKit frontends to trusted users and monitor for abnormal daemon behavior.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Docker
- Date Reserved
- 2026-09-17T17:17:56.112Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ac3e69d2cdf04f65628b488
Added to database: 10/05/2026, 18:04:13 UTC
Last enriched: 10/05/2026, 18:18:49 UTC
Last updated: 10/05/2026, 19:34:03 UTC
Views: 6
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