CVE-2026-103433: Auth Bypass

Description

Docker Buildx Bake does not request the expected fs.read approval for certain filesystem inputs. An untrusted Bake definition can expose a readable file through a pathless secret whose ID is interpreted as a client-side pathname, or consume a local OCI image layout outside the project after entitlement validation checks a different path representation. Users who run untrusted Bake definitions are affected.

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Weakness Type (CWE)

CWE-862 Missing Authorization

References

Other References

https://docs.docker.com/build/bake/reference/#targetentitlements https://github.com/docker/buildx https://github.com/docker/buildx/releases/tag/v0.37.2 https://github.com/docker/buildx/security/advisories/GHSA-p54p-jq4x-rc28

Frequently Asked Questions

What is CVE-2026-103433? +

Docker Buildx Bake does not request the expected fs.read approval for certain filesystem inputs. An untrusted Bake definition can expose a readable file through a pathless secret whose ID is interpreted as a client-side pathname, or consume a local OCI image layout outside the project after entitlement validation checks a different path representation. Users who run untrusted Bake definitions are affected.

How do I check if I'm vulnerable to CVE-2026-103433? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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