MEDIUM 5.3 NVD
CVE-2026-61711
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, a custom frontend could
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, a custom frontend could place an invalid SecurityMode value in a crafted build request, and executor/oci/spec_linux.go treated the unsupported value as a non-sandbox mode without requiring the security.insecure entitlement. This disabled Seccomp and AppArmor protections for the build container even though Linux capabilities remained restricted. This issue is fixed in version 0.31.1.
References
- https://github.com/moby/buildkit/commit/3ea6dd0ce7d269cdb8aa23348718e2c1bf64f109
- https://github.com/moby/buildkit/commit/64bbec89ca43dd95b2853edeca240c33c6729910
- https://github.com/moby/buildkit/releases/tag/v0.31.1
- https://github.com/moby/buildkit/security/advisories/GHSA-7236-3392-c5c6
This medium severity vulnerability with a CVSS score of 5.3 was published on 2026-08-19 via NVD.
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