CVE-2026-118248 | BDVDB-2026-397284 Detail

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.

Impact#

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Exploit#

History#

1. Version 12026-10-28Record published in the CVE List.
2. Version 22026-10-30Most recent update recorded in the CVE List.