LOW 2.3 NVD
CVE-2026-61712
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, BuildKit read attacker-c
BuildKit is a toolkit for converting source code to build artifacts in an efficient, expressive and repeatable manner. Prior to 0.31.1, BuildKit read attacker-controlled /etc/passwd and /etc/group files without an upper bound while resolving a username to a user identifier or group identifier in executor/oci/user.go and solver/llbsolver/ops/user_linux.go. A malicious base image or build could provide oversized files that exhausted memory during user resolution and caused out-of-memory termination of the buildkitd process. This issue is fixed in version 0.31.1.
References
- https://github.com/moby/buildkit/commit/408266e4ba254cecabedaacdad6905de4d2a75a1
- https://github.com/moby/buildkit/commit/69a3924648e485acb3faad3081e03a8554431255
- https://github.com/moby/buildkit/releases/tag/v0.31.1
- https://github.com/moby/buildkit/security/advisories/GHSA-72x6-4j93-7w86
This low severity vulnerability with a CVSS score of 2.3 was published on 2026-08-19 via NVD.
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