CVE-2026-93323Oversized Dockerfile or .dockerignore can exhaust buildkitd memory
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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The Dockerfile frontend loaded the Dockerfile and .dockerignore files of a build context into memory without a size limit. A build context containing an oversized file could make buildkitd allocate memory proportional to that file, potentially exhausting memory and terminating the daemon, which interrupts other builds on the same instance. Fixed by rejecting such files above 16 MiB.
- CVSS
- 6.8 MEDIUM (v4.0, CNA)CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
- Weakness (CWE)
- CWE-789
- 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 5, 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-mgqf-486f-49vpvendor-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.