Improper Validation of Specified Type of Input Affecting github.com/moby/buildkit/client/llb package, versions <0.31.1
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published20 Aug 2026
- disclosed19 Aug 2026
- creditAlex0Young
Introduced: 19 Aug 2026
CVE-2026-61711 Â (opens in a new tab)How to fix?
Upgrade github.com/moby/buildkit/client/llb to version 0.31.1 or higher.
Overview
Affected versions of this package are vulnerable to Improper Validation of Specified Type of Input in client/llb/exec.go and executor/oci/spec_linux.go. An attacker can disable Seccomp and AppArmor protections for a build container by supplying a crafted build request with an invalid SecurityMode value, even when security.insecure was not granted. This affects build execution on Linux containers: the malformed enum is processed as a non-sandbox path and the resulting OCI spec drops the sandbox security options, so the build runs with weaker confinement than the user requested.