CVE-2026-40602
5.6
Vector
CVSS:3.1/AV:L/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:N
Exploitability: 0.3 / Impact: 5.2
Source: security-advisories@github.com (Secondary)
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.
Affected (1)
Configuration A
| Vulnerable Software | Affected Versions |
|---|---|
| Before 1.0.0 |
Related CWEs
CWE-1336
Improper Neutralization of Special Elements Used in a Template Engine
The product uses a template engine to insert or process externally-influenced input, but it does not neutralize or incorrectly neutralizes special elements or syntax that can be interpreted as template expressions or other code directives when processed by the engine.
CWE-94
Improper Control of Generation of Code ('Code Injection')
The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.
References (2)
Source: security-advisories@github.com
Issue Tracking
Source: security-advisories@github.com
MitigationVendor Advisory
Timeline
No history available yet.