CVE-2026-33747
8.4 · HIGHOverview
CVE-2026-33747 is a high-severity vulnerability affecting mobyproject buildkit. It was published on March 27, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).
This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from mobyproject. Update buildkit to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| mobyproject | buildkit | >= 0, < 0.28.1 | Affected |
Frequently Asked Questions
What is CVE-2026-33747?
CVE-2026-33747 is a high-severity vulnerability affecting mobyproject buildkit. It was published on March 27, 2026 and has a CVSS 3.1 base score of 8.4 (HIGH).
How severe is CVE-2026-33747?
This vulnerability has a CVSS 3.1 base score of 8.4, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.
How do I fix or remediate CVE-2026-33747?
Check the references section for vendor advisories and patches from mobyproject. Update buildkit to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2026-33747?
CyberStrike's AI-powered security agents can automatically detect CVE-2026-33747 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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