CVE-2026-93317

Medium

Description

An unauthenticated attacker controlling a registry or OCI-layout blob source could provide blob contents that did not match the claimed digest. The resulting snapshot could be cached under that digest and reused by a later victim build, compromising build-input integrity.

SeverityMedium

CVSS5.9

Exploit probability—

ProductBuildKit

PublishedOct 5, 2026

First seenOct 5, 2026

Weakness typeCWE-354CWE-354

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-p3rc-w3hc-pqvv

Affected products

Product	Affected versions	Fixed in
moby BuildKit	0.28.0 ≤ v < 0.33.1	0.33.1

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