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1 vulnerability by home-assistant-ecosystem

CVE-2026-40602 (GCVE-0-2026-40602)

Vulnerability from cvelistv5 – Published: 2026-04-21 17:40 – Updated: 2026-04-21 19:02
VLAI?
Title
hass-cli: Handling of user-supplied Jinja2 templates
Summary
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.
Severity ?
5.6 (Medium)
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
CWE
  • CWE-94 - Improper Control of Generation of Code ('Code Injection')
  • CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
References
Impacted products
Vendor Product Version
home-assistant-ecosystem home-assistant-cli Affected: < 1.0.0
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