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Medium 6.9Published Oct 5, 2026
CVE-2026-93321Malformed LLB file operation can crash buildkitd
Updated under an hour ago ()
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It affects moby BuildKit. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting all builds running on that daemon.
- CVSS
- 6.9 MEDIUM (v4.0, CNA)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
- Weakness (CWE)
- CWE-129
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Docker
- NVD analysis
- Awaiting Analysis
- Record last updated
- Oct 6, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
moby BuildKit moby:buildkit (from the name) | through 0.33.0 | CNA record |
References
- https://github.com/moby/buildkit/security/advisories/GHSA-fjj4-h6vf-m9hjvendor-advisory
- https://github.com/moby/buildkit/releases/tag/v0.33.1patch
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.