CVE-2026-93322 Malformed MergeOp can crash the BuildKit daemon
A malicious frontend can submit a malformed LLB definition to crash the BuildKit daemon, interrupting all active builds.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-93322?
CVE-2026-93322 is a medium-severity denial of service vulnerability in moby BuildKit, published on 5 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
A malicious frontend can submit an LLB definition that causes buildkitd to panic and terminate, interrupting all builds running on that daemon.
Weakness: CWE-129
Which versions are affected by CVE-2026-93322?
How do I fix CVE-2026-93322?
No fix has been published for CVE-2026-93322 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-93322 being exploited?
There is no known exploitation of CVE-2026-93322 in the wild and no public exploit code.
Sources
Also known as AZL-106815, GHSA-cv6p-7w7g-xjwq, UBUNTU-CVE-2026-93322.