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CVE PROGRAM SOURCE RECORD5.6 Medium

CVE-2026-40602

hass-cli: Handling of user-supplied Jinja2 templates

Description

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 beyond the intended usage. This vulnerability is fixed in 1.0.0.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

home-assistant-ecosystem home-assistant-cli

  • < 1.0.0affected

References