CVE-2026-33044CWE-79

Home Assistant has stored XSS in Map-card through malicious device name

High · published March 27, 2026

CVSS v4.0
7.3
EPSS
0%
Percentile
19.7
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
7.3 · HIGH
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
EPSS
0.00282 · 19.7th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-27T19:35Z
EPSS history
Timeline
  • 27 MAR 19:35Z
    Home Assistant has stored XSS in Map-card through malicious device name
    cvelistv5