Security Advisory

CVE-2026-40602

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-21 17:40:10

Last updated 2026-04-21 19:02:03

Assigner GitHub_M

State PUBLISHED

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 Pythons internals and extended the scope of templating beyond the intended usage. This vulnerability is fixed in 1.0.0.

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