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CVE PROGRAM SOURCE RECORD6.9 Medium

CVE-2026-118248

Highcharts Dashboards: editableOptions.propertyPath writes to Object.prototype

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

highcharts highcharts

  • < 13.1.0affected

@highcharts dashboards

  • >= 1.0.0, < 4.2.2affected

References