Vulnerability Description
Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.3, Highcharts Dashboards edit mode parses fullscreen language labels as HTML rather than inserting them as text. An attacker who controls Dashboards language options can supply markup with event handlers, which execute in the hosting page origin when the fullscreen control is rendered. The label is reachable only when edit mode is enabled and viewFullscreen is present in the context-menu items. This issue is fixed in 4.2.3.
Related Weaknesses (CWE)
References
- https://github.com/highcharts/highcharts/commit/f97213bab745e40f628720c21f4e8b31
- https://github.com/highcharts/highcharts/releases/tag/dashboards-v4.2.3
- https://github.com/highcharts/highcharts/security/advisories/GHSA-58g7-7f52-h92c
FAQ
What is CVE-2026-118253?
CVE-2026-118253 is a documented vulnerability. Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.3, Highcharts Dashboards edit mode parses fullscreen language labels as HTML rather than inserting them as text. An at...
How severe is CVE-2026-118253?
CVSS scoring is not yet available for CVE-2026-118253. Check NVD for updates.
Is there a patch for CVE-2026-118253?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.