CVE-2026-33044 HIGH

CVE-2026-33044: Home Assistant has stored XSS in Map-card through malicious device name

Vendor Home-Assistant
Product core
Weakness CWE-79 · XSS
Published March 27, 2026
Last update April 2, 2026
View on NVD All CVEs

CVSS base score

7.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction —
Confidentiality —
Integrity —

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

March 27, 2026 CVE published
April 2, 2026 Record updated