The Home Assistant Command-line interface (hass-cli) is a command-line tool for Home Assistant.

Code

The project this record applies to. Exploit listings stay in References.

• Repository · github.com

Timeline

Detection, updates, and resolution for this record.

1. Apr 21, 2026 · NIST NVD

   Detected

   The Home Assistant Command-line interface (hass-cli) is a command-line tool for Home Assistant. Up to 1.0.0 of home-assitant-cli an unrestricted environment was used to handle Jninja2 templates instead of a sandboxed one. The user-supplied input within Jinja2 templates was rendered locally with no restrictions. This gave users access to Python's internals and extended the scope of templating beyon

2. Jun 17, 2026 · NIST NVD

   Updated

   The Home Assistant Command-line interface (hass-cli) is a command-line tool for Home Assistant. Up to 1.0.0 of home-assitant-cli an unrestricted environment was used to handle Jninja2 templates instead of a sandboxed one. The user-supplied input within Jinja2 templates was rendered locally with no restrictions. This gave users access to Python's internals and extended the scope of templating beyon

Affected

• cpe home-assistant-ecosystem/home assistant command-line interfaceversion unspecified

Sources

• CVE.orgVulnerability recordCVE-2026-40602

  Official CVE identifier

  cve.org
• NIST NVDVulnerability recordCVE-2026-40602

  The Home Assistant Command-line interface (hass-cli) is a command-line tool for Home Assistant. Up to 1.0.0 of home-assitant-cli an unrestricted environment was used to handle Jninja2 templates instead of a sandboxed one. The user-supplied input within Jinja2 templates was render

  nvd.nist.gov

References

• Issue Tracking · github.com
• Mitigation · github.com