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[ CVE-2026-118246 · Published 28 Oct 2026 ]

Highcharts Core: `breadcrumbs.style` keys become SVG event-handler attributes

CVSS 8.4 EPSS <1%Fix available

[ Description ]Official description

Highcharts JS is a JavaScript charting library based on SVG. From 10.0.0 until 11.4.9, 12.6.1, and 13.1.0, Highcharts applies breadcrumbs.style as SVG attributes rather than CSS and does not filter the attribute names. An attacker who controls chart configuration can provide event-handler keys through drilldown.breadcrumbs, navigation.breadcrumbs, or hierarchical series breadcrumb options. The keys become active handlers on the breadcrumb button and execute in the hosting page origin after the user navigates to a level and hovers over or activates the button. Styled-mode charts do not apply this option and are not affected. This issue is fixed in 11.4.9, 12.6.1 and 13.1.0.

[ Fixes ]Fixes and patches

  • highcharts 11.4.9Fixed version · GitHub Advisories · npm package highcharts: upgrade to 11.4.9 or later (affected >= 10.0.0, < 11.4.9)
  • highcharts 12.6.1Fixed version · GitHub Advisories · npm package highcharts: upgrade to 12.6.1 or later (affected >= 12.0.0, < 12.6.1)
  • highcharts 13.1.0Fixed version · GitHub Advisories · npm package highcharts: upgrade to 13.1.0 or later (affected >= 13.0.0, <= 13.0.2)

[ Packages ]Affected open-source packages

[ References ]References