CVE-2026-40602 — The Home Assistant Command-line interface (hass-cli) is a
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 input within Jinja2 templates was rendered
What This Means For You
- If your environment is affected by CWE-94, CWE-1336, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-40602 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
CVE-2026-40602 - hass-cli Jinja2 Template Injection - Python Access
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-40602 | vulnerability | CVE-2026-40602 |
| CWE-94 | weakness | CWE-94 |
| CWE-1336 | weakness | CWE-1336 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 21, 2026 at 21:16 UTC |
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