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

> An authenticated user or malicious integration can inject scripts into Home Assistant statistics graphs, leading to code execution when viewed.

- **Severity:** Critical 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`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 22 Sep 2026
- **Updated:** 22 Sep 2026
- **Also known as:** GHSA-wx4m-69m9-gx3m, PYSEC-2026-4052

## What is CVE-2026-91130?

CVE-2026-91130 is a critical cross-site scripting vulnerability in home-assistant core, published on 22 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

### Official description

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.

Weakness: CWE-80 (Improper Neutralization of Script-Related HTML Tags in a Web Page)

## Which versions are affected by CVE-2026-91130?

3 open source packages ship an affected version, including homeassistant.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `homeassistant` | PyPI | All versions | 2026.7.0 |
| `homeassistant` | PyPI | All versions | 2026.7.0 |
| `homeassistant` | PyPI | All versions | 2026.7.0 |

## How do I fix CVE-2026-91130?

Upgrade homeassistant to 2026.7.0 or later.

## Is CVE-2026-91130 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91130 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-91130 and fix it if it is affected.

What it is: CVE-2026-91130 is a critical cross-site scripting vulnerability in home-assistant core, published on 22 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91130 exists.

Affected packages and fixed versions:
- homeassistant (PyPI): affected all versions; fixed in 2026.7.0
- homeassistant (PyPI): affected all versions; fixed in 2026.7.0
- homeassistant (PyPI): affected all versions; fixed in 2026.7.0

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-91130/ (Markdown: https://insights.sbomify.com/CVE-2026-91130/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-91130
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-91130
- OSV: https://osv.dev/vulnerability/CVE-2026-91130

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-91130/
Summaries are generated and may contain mistakes; the official description above is the record.