x/vulndb: potential Go vuln in github.com/moby/buildkit: GHSA-4c29-8rgm-jvjj

[GoVulnBot]

Advisory GHSA-4c29-8rgm-jvjj references a vulnerability in the following Go modules:

Module
github.com/moby/buildkit

Description:

Impact

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.

Patches

The issue has been fixed in v0.28.1+

Workarounds

Issue 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.

References:

• ADVISORY: GHSA-4c29-8rgm-jvjj
• ADVISORY: GHSA-4c29-8rgm-jvjj
• WEB: https://github.com/moby/buildkit/releases/tag/v0.28.1

Cross references:

• github.com/moby/buildkit appears in 6 other report(s):
  • data/excluded/GO-2023-1609.yaml (x/vulndb: potential Go vuln in github.com/moby/buildkit: CVE-2023-26054 #1609) EFFECTIVELY_PRIVATE
  • data/excluded/GO-2023-2296.yaml (x/vulndb: potential Go vuln in github.com/moby/buildkit: CVE-2020-27534 #2296) LEGACY_FALSE_POSITIVE
  • data/reports/GO-2024-2492.yaml (x/vulndb: potential Go vuln in github.com/moby/buildkit: CVE-2024-23650 #2492)
  • data/reports/GO-2024-2493.yaml (x/vulndb: potential Go vuln in github.com/moby/buildkit: CVE-2024-23651 #2493)
  • data/reports/GO-2024-2494.yaml (x/vulndb: potential Go vuln in github.com/moby/buildkit: CVE-2024-23652 #2494)
  • data/reports/GO-2024-2497.yaml (x/vulndb: potential Go vuln in github.com/moby/buildkit: GHSA-wr6v-9f75-vh2g #2497)

See doc/quickstart.md for instructions on how to triage this report.

id: GO-ID-PENDING
modules:
    - module: github.com/moby/buildkit
      versions:
        - fixed: 0.28.1
      vulnerable_at: 0.28.0
summary: BuildKit's Malicious frontend can cause file escape outside of storage root in github.com/moby/buildkit
cves:
    - CVE-2026-33747
ghsas:
    - GHSA-4c29-8rgm-jvjj
references:
    - advisory: https://github.com/advisories/GHSA-4c29-8rgm-jvjj
    - advisory: https://github.com/moby/buildkit/security/advisories/GHSA-4c29-8rgm-jvjj
    - web: https://github.com/moby/buildkit/releases/tag/v0.28.1
source:
    id: GHSA-4c29-8rgm-jvjj
    created: 2026-03-26T19:01:41.791309817Z
review_status: UNREVIEWED

[gopherbot]

Change https://go.dev/cl/760421 mentions this issue: data/reports: add 6 reports

[gopherbot]

Change https://go.dev/cl/760420 mentions this issue: data/reports: add 8 reports