Vulnerability 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.
Related Weaknesses (CWE)
References
- https://github.com/highcharts/highcharts/commit/98d3652cdc4f66fbccbbb8b4184ecd8f
- https://github.com/highcharts/highcharts/releases/tag/dashboards-v4.2.2
- https://github.com/highcharts/highcharts/security/advisories/GHSA-grj7-r4jv-pw9j
FAQ
What is CVE-2026-118245?
CVE-2026-118245 is a documented vulnerability. 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...
How severe is CVE-2026-118245?
CVSS scoring is not yet available for CVE-2026-118245. Check NVD for updates.
Is there a patch for CVE-2026-118245?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.