CVE-2026-53819: OpenClaw: Workspace .env could override Homebrew executable selection for skill install flows

Workspace .env could override Homebrew executable selection for skill install flows. In affected versions, a workspace .env in a repository opened by a trusted operator could override the Homebrew executable used by the install helper.

This advisory is scoped to the named feature and configuration. It does not change OpenClaw’s trusted-operator model: authenticated Gateway operators, installed plugins, and intentional local execution surfaces remain trusted unless a separate policy, approval, allowlist, sandbox, or auth boundary is crossed.