CVE-2026-93315

Medium

Description

When proxy networking with CA injection is enabled, a build can modify its CA bundle before cleanup. This may cause cleanup to block, operate outside the build rootfs, or fail without failing the build.

SeverityMedium

CVSS5.8

Exploit probability—

ProductBuildKit

PublishedOct 5, 2026

First seenOct 5, 2026

Weakness typeCWE-367CWE-367

How to fix

Update

moby BuildKit0.33.1 or later

Patches

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

Vendor advisories

github.com/moby/buildkit/security/advisories/GHSA-2f5p-x9ph-g97x

Affected products

Product	Affected versions	Fixed in
moby BuildKit	0.31.0 ≤ v < 0.33.1	0.33.1

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