CVE-2026-93317

Container blob cache can accept unverified content

State: Published
Severity: 5.9 Medium
Published: Oct 5, 2026
Updated: Oct 5, 2026
Reserved: Sep 17, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	5.9 Medium	CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:L/SA:N	Docker

Weaknesses

CWE-354 Improper Validation of Integrity Check Value

Affected Products

Product	Versions
BuildKitmoby	0.28.0 to before 0.33.1Affected

References

https://github.com/moby/buildkit/security/advisories/GHSA-p3rc-w3hc-pqvvvendor-advisory
https://github.com/moby/buildkit/releases/tag/v0.33.1patch

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