RCE in Home-assistant-ecosystem Home-assistant-cli
CVE-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…
Vulnerability class: RCE (Remote Code Execution)
EPSS: 0.001 (1.2th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N.
Affected products
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Mitigation, Vendor Advisory)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
Frequently asked questions
- What is CVE-2026-40602?
- CVE-2026-40602 is a medium-severity vulnerability in Home-assistant-ecosystem Home-assistant-cli, classified under Code Injection. CVSS score: 5.6/10. Published 2026-04-21.
- How severe is CVE-2026-40602?
- Medium severity. CVSS v3 base score is 5.6 out of 10.