CVE-2026-118245 Highcharts Dashboards: `chartConstructor` is an unchecked lookup into the Highcharts namespace
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-118245?
CVE-2026-118245 is a high-severity vulnerability in @highcharts dashboards, published on 28 Oct 2026.
Official description
Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.2, Highcharts Dashboards uses chartConstructor as an unchecked property lookup in the Highcharts namespace and invokes the selected member with the component container and chartOptions. An attacker who controls dashboard configuration can select a public utility function instead of a supported chart constructor, causing attacker-controlled options to be copied to the container as properties or attributes. Markup and event handlers can then execute in the hosting page origin when the board renders. No user interaction beyond rendering the board is required. This issue is fixed in 4.2.2.
Weakness: CWE-79
Which versions are affected by CVE-2026-118245?
2 open source packages ship an affected version, including @highcharts/dashboards.
| Package | Affected | Fixed in |
|---|---|---|
@highcharts/dashboards npm | From 1.0.0 | 4.2.2 |
@highcharts/dashboards npm | From 1.0.0 | 4.2.2 |
How do I fix CVE-2026-118245?
Upgrade @highcharts/dashboards to 4.2.2 or later.
Is CVE-2026-118245 being exploited?
There is no known exploitation of CVE-2026-118245 in the wild and no public exploit code.
Sources
Also known as GHSA-grj7-r4jv-pw9j.