VULNERABILITY INTELLIGENCE

CVE-2026-40602

CVSS score5.6 MEDIUM
EPSS probability0.10%
CISA KEVNot currently listed
Published2026-04-21
Last modified2026-10-26
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N

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.

Weakness classification

  • security-advisories@github.com: CWE-94

Primary references