CVE-2026-118248
CVE-2026-118248 · Highcharts Dashboards: editableOptions.propertyPath writes to Object.prototype
This page contains facts from public vulnerability sources. Check the original advisory before updating.
Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.2, Highcharts Dashboards edit mode walks editableOptions propertyPath segments without rejecting prototype-related keys. An attacker who controls editableOptions can provide a path through __proto__ or constructor, and a user's edit writes the configured value onto Object.prototype. The property then becomes visible to JavaScript throughout the page, with consequences determined by the consuming application. This issue is fixed in 4.2.2.
CVSS 6.9 · Medium · EPSS 0.3%
- Published
- Updated
Affected products and versions
highcharts
- Versions
- < 13.1.0: Affected
No fix published
dashboards
- Versions
- >= 1.0.0, < 4.2.2: Affected
No fix published