CVE-2026-33044: PYSEC-2026-2517 - Home Assistant has stored XSS in Map-card through malicious device name

CVE-2026-33044 · Severity: medium · CVSS 5.4 · Published 2026-03-27

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.

Technologies: Home Assistant Home-Assistant, homeassistant (PyPI). Vendors: Home Assistant, PyPI.

Quick answers

Is CVE-2026-33044 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-33044 being exploited in the wild.
How severe is CVE-2026-33044?
Medium severity, with a CVSS score of 5.4, published 27 March 2026.
Which products and versions are affected?
homeassistant (PyPI) ECOSYSTEM:introduced=2020.02,fixed=2026.01.
Is there a fix for CVE-2026-33044?
Yes. homeassistant (PyPI): upgrade to 2026.01 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
Am I affected by CVE-2026-33044?
Check whether you run Home Assistant Home-Assistant or homeassistant (PyPI) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • homeassistant (PyPI): upgrade to 2026.01 or later
    pip install "homeassistant>=2026.01"

Affected products

  • Home Assistant Home-Assistant
  • homeassistant (PyPI) ECOSYSTEM:introduced=2020.02,fixed=2026.01

Identifiers

  • CVE-2026-33044
  • GHSA-r584-6283-p7xc
  • PYSEC-2026-2517

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.