CVE-2026-33747

HIGH

8.4

Beschreibung

BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to version 0.28.1, when using a custom BuildKit frontend, the frontend can craft an API message that causes files to be written outside of the BuildKit state directory for the execution context. The issue has been fixed in v0.28.1. The vulnerability requires using an untrusted BuildKit frontend set with `#syntax` or `--build-arg BUILDKIT_SYNTAX`. Using these options with a well-known frontend image like `docker/dockerfile` is not affected.

CVE Details

CVSS v3.1 Bewertung8.4

SchweregradHIGH

CVSS VektorCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AngriffsvektorLOCAL

KomplexitatLOW

Erforderliche PrivilegienNONE

BenutzerinteraktionNONE

Veroffentlicht3/27/2026

Zuletzt geandert4/1/2026

Quellenvd

Honeypot-Sichtungen0

Betroffene Produkte

mobyproject:buildkit

Schwachen (CWE)

CWE-22

Referenzen

https://github.com/moby/buildkit/releases/tag/v0.28.1(security-advisories@github.com)

https://github.com/moby/buildkit/security/advisories/GHSA-4c29-8rgm-jvjj(security-advisories@github.com)

IOC Korrelationen

Keine Korrelationen erfasst

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