CVE-2026-33747

HIGH

8.4

Descricao

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.

Detalhes CVE

Pontuacao CVSS v3.18.4

SeveridadeHIGH

Vetor CVSSCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Vetor de ataqueLOCAL

ComplexidadeLOW

Privilegios necessariosNONE

Interacao do usuarioNONE

Publicado3/27/2026

Ultima modificacao4/1/2026

Fontenvd

Avistamentos honeypot0

Produtos afetados

mobyproject:buildkit

Fraquezas (CWE)

CWE-22

Referencias

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)

Correlacoes IOC

Sem correlacoes registradas

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