CVE-2026-118248Highcharts Dashboards: editableOptions.propertyPath writes to Object.prototype

Descripción

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.

Datos: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Se publican tal como los indican las fuentes, en inglés.

Productos y versiones afectados

Referencias y parches

• https://github.com/highcharts/highcharts/security/advisories/GHSA-wg5j-9wp8-2ggm
• https://github.com/highcharts/highcharts/commit/05efb9849130461fe61992ea8f58d22edaad978b
• https://github.com/highcharts/highcharts/releases/tag/dashboards-v4.2.2