CVE-2026-61711

UNKNOWN 0.0

BuildKit: Custom frontend could bypass Seccomp/AppArmor

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-20
Vendor	moby
Product	buildkit
Published	Aug 19, 2026

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Affected Versions

moby / buildkit

< 0.31.1

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/moby/buildkit/security/advisories/GHSA-7236-3392-c5c6 github.com: https://github.com/moby/buildkit/commit/3ea6dd0ce7d269cdb8aa23348718e2c1bf64f109 github.com: https://github.com/moby/buildkit/commit/64bbec89ca43dd95b2853edeca240c33c6729910 github.com: https://github.com/moby/buildkit/releases/tag/v0.31.1