CVE-2026-93323: Oversized Dockerfile or .dockerignore can exhaust buildkitd memory
Medium · CVSS 6.8 (CVSS 4.0)EPSS 0.11%, 1th percentilePublished Updated Assigner: Docker
Description
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.
CWE-789
Tracked companies
Mapped from the CVE’s affected-product data, NVD CPE matches, vendor advisories or package feeds. A mapping means the vendor’s software is named, not that its hosted service was exposed.
Status incidents that name it
No tracked status incident names this CVE.
Affected vendors and products
moby: BuildKit
References
- CVE record on cve.org (opens in new tab)
- NVD entry (opens in new tab)
- github.com/moby/buildkit/releases/tag/v0.33.1 (opens in new tab)
- github.com/moby/buildkit/security/advisories/GHSA-mgqf-486f-49vp (opens in new tab)
- CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (opens in new tab)
- This product uses data from the NVD API but is not endorsed or certified by the NVD. (opens in new tab)
- Known Exploited Vulnerabilities catalog from CISA. (opens in new tab)
- EPSS scores from FIRST (Exploit Prediction Scoring System). (opens in new tab)