{"id":"CVE-2026-61712","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-61712","summary":"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…","details":"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.","published":"2026-08-19T20:17:19.730","modified":"2026-08-19T20:17:19.730","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/moby/buildkit/commit/408266e4ba254cecabedaacdad6905de4d2a75a1","label":"moby/buildkit@408266e"},"references":[{"type":"WEB","url":"https://github.com/moby/buildkit/commit/408266e4ba254cecabedaacdad6905de4d2a75a1"},{"type":"WEB","url":"https://github.com/moby/buildkit/commit/69a3924648e485acb3faad3081e03a8554431255"},{"type":"WEB","url":"https://github.com/moby/buildkit/releases/tag/v0.31.1"},{"type":"WEB","url":"https://github.com/moby/buildkit/security/advisories/GHSA-72x6-4j93-7w86"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-19T20:17:19.730"}}