Is github.com/moby/buildkit affected by CVE-2026-33748?

Go github.com/moby/buildkit is affected in <0.28.1.

Is CVE-2026-33748 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.5%.

medium

CVE-2026-33748

Q: Is CVE-2026-33748 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.5%.

Go · github.com/moby/buildkit

Summary

BuildKit Git URL subdir component can cause access to restricted files in github.com/moby/buildkit

Severity: medium
EPSS: 0.5% (p37)
Also known as: GHSA-4vrq-3vrq-g6gg, GO-2026-4859
Published: 2026-03-27

References

https://github.com/moby/buildkit/security/advisories/GHSA-4vrq-3vrq-g6gg
https://docs.docker.com/build/concepts/context/#url-fragments
https://github.com/moby/buildkit/releases/tag/v0.28.1

Related advisories

CVE-2026-33747 — medium · Go/github.com/moby/buildkit

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Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.