A vulnerability (CVE-2026-67543) was discovered in Heym, an agentic system and business-process automation platform, prior to version 0.0.70. The issue allowed untrusted code to escape the intended Docker sandbox and execute with host root privileges due to inadequate isolation. Specifically, the skill executor skillpythonexecutor.py ran untrusted code in a local subprocess with excessive filesystem and network access, and mounted the Docker socket as root. This allowed an attacker to potentially exploit the vulnerability and gain root access on the host system. The issue has been patched in version 0.0.70 of Heym.