What’s Vulnerable › Vulnerabilities
CVE-2026-33044: Home Assistant has stored XSS in Map-card through malicious device name
- Severity: medium (CVSS 5.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.2% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-03-27 · updated 2026-10-26
- Weakness: CWE-79
Description
Home Assistant is open source home automation software that puts local control and privacy first. Starting in version 2020.02 and prior to version 2026.01, an authenticated party can add a malicious name to their device entity, allowing for Cross-Site Scripting attacks against anyone who can see a dashboard with a Map-card which includes that entity. It requires that the victim hovers over an information point. Version 2026.01 fixes the issue.
Affected products
- Home-Assistant: from 2020.02 before 2026.1.0 — fixed in 2026.1.0
How to fix
Upgrade to a fixed version: Home-Assistant 2026.1.0. Check the vendor advisory for mitigations.
References
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