CVE-2026-93323

Medium

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.

SeverityMedium

CVSS6.8

Exploit probability—

ProductBuildKit

PublishedOct 5, 2026

First seenOct 5, 2026

Weakness typeCWE-789CWE-789

How to fix

Patches

github.com/moby/buildkit/releases/tag/v0.33.1

Vendor advisories

github.com/moby/buildkit/security/advisories/GHSA-mgqf-486f-49vp

Affected products

Product	Affected versions	Fixed in
moby BuildKit	v ≤ 0.33.0	—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.