---
title: "CVE-2026-91130: Home Assistant: XSS in Statistics Graph Card"
url: https://erroneo.us/security/cve/CVE-2026-91130/
description: "CVE-2026-91130 (homeassistant (PyPI)): Home Assistant is open source home automation software focused on local control and privacy. Prior to 2026.7.0, the…"
type: vulnerability-record
section: "Security Digest"
date_published: 2026-09-22
date_modified: 2026-09-22
publisher: erroneo.us
author: erroneo.us Security Desk
cve: "CVE-2026-91130"
kev: false
cvss: 9.3
epss: 0.00386
license: All rights reserved. Quote with attribution and a link.
---

# CVE-2026-91130: Home Assistant: XSS in Statistics Graph Card

**Signal:** Critical, preconditions apply. Severe if exploited, but exploitation needs conditions that may not apply to you. (Computed from CISA KEV, EPSS and CVSS; not an editorial verdict.)

## Should you act?

- Not in CISA KEV , but CISA’s SSVC assessment records a public proof-of-concept, so attack code exists.
- EPSS 0.4% , percentile 31: FIRST’s model estimates a 0.4% chance of exploitation activity in the next 30 days, higher than 31% of all scored CVEs (low). EPSS is a probability, not a verdict.
- Needs an account (low (any account)). Exposure depends on who can log in.
- Only applies if your dependency tree includes homeassistant (PyPI) < 2026.7.0, fixed in 2026.7.0 . Check your lockfile, including transitive dependencies.

## What it is

Home Assistant is open source home automation software focused on local control and privacy. Prior to 2026.7.0, the Statistics Graph card in src/components/chart/statistics-chart.ts passed entity names through getStatisticLabel and computeStateName and interpolated param.seriesName into ECharts tooltip HTML without escaping. An authenticated user or an integration that supplies a malicious default entity name could cause script-related HTML to execute when a viewer hovered over a data point. Mean, State, Sum, and Change fields in the default Line chart configuration were affected, while Bar charts were not. This issue is fixed in version 2026.7.0.

## Affected packages

- PyPI `homeassistant` < 2026.7.0 → fixed: 2026.7.0

## Affected products (CVE record)

- home-assistant core: < 2026.7.0

## Severity

- GitHub_M CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`
- GitHub CVSS 4.0: 9.3 `CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H`

## Exploitation

- CISA KEV: not listed (no confirmed in-the-wild exploitation known to CISA).
- CISA SSVC assessment: exploitation poc , automatable no , technical impact total .
- FIRST EPSS (model of 2026-10-21): 0.39% probability of exploitation activity in the next 30 days; percentile 31.

## Sources

- [GitHub Advisory GHSA-wx4m-69m9-gx3m](https://github.com/advisories/GHSA-wx4m-69m9-gx3m)
- [CVE.org record CVE-2026-91130](https://www.cve.org/CVERecord?id=CVE-2026-91130)
- [NVD entry CVE-2026-91130](https://nvd.nist.gov/vuln/detail/CVE-2026-91130)
- [github.com](https://github.com/home-assistant/core/security/advisories/GHSA-wx4m-69m9-gx3m)
- [github.com](https://github.com/home-assistant/frontend/pull/52235)
- [github.com](https://github.com/home-assistant/frontend/commit/b8c201b6d34414d30c622797366570185c219614)
- [github.com](https://github.com/home-assistant/core/releases/tag/2026.7.0)

---
Source page: https://erroneo.us/security/cve/CVE-2026-91130/ · Security Digest: https://erroneo.us/security/ · More: https://erroneo.us/llms.txt