How severe is CVE-2026-91130?

CVE-2026-91130 has a CVSS 4.0 base score of 9.3, rated critical severity.

Is CVE-2026-91130 being actively exploited?

It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.

How do I fix CVE-2026-91130?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2026-91130 published?

CVE-2026-91130 was published on 2026-09-22.

CVE-2026-91130

CVE-2026-91130 is a critical-severity vulnerability with a CVSS 4.0 base score of 9.3. The underlying weakness is classified as CWE-80.

Key facts

Severity: Critical (CVSS 4.0 base score 9.3)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-80
Published: 2026-09-22
Last modified: 2026-09-22

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.

Frequently asked questions

What is CVE-2026-91130?: 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.
How severe is CVE-2026-91130?: CVE-2026-91130 has a CVSS 4.0 base score of 9.3, rated critical severity.
Is CVE-2026-91130 being actively exploited?: It is not currently listed in CISA's Known Exploited Vulnerabilities catalog, and no EPSS exploit-prediction score is available yet.
How do I fix CVE-2026-91130?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2026-91130 published?: CVE-2026-91130 was published on 2026-09-22.

References

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