Highcharts up to 11.4.8/12.6.0/13.1.0 Breadcrumbs cross site scripting

Summaryinfo

A vulnerability was found in Highcharts up to 11.4.8/12.6.0/13.1.0. It has been rated as problematic. Affected is an unknown function of the component Breadcrumbs. The manipulation leads to cross site scripting. This vulnerability is documented as CVE-2026-118246. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Highcharts up to 11.4.8/12.6.0/13.1.0. This issue affects an unknown function of the component Breadcrumbs. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-118246 since 10/27/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 11.4.9, 12.6.1 or 13.1.0 eliminates this vulnerability.

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Productinfo

Name

• Highcharts

Version

• 11.4.0
• 11.4.1
• 11.4.2
• 11.4.3
• 11.4.4
• 11.4.5
• 11.4.6
• 11.4.7
• 11.4.8
• 12.0
• 12.1
• 12.2
• 12.3
• 12.4
• 12.5
• 12.6.0
• 13.0
• 13.1.0

Website

• Product: https://github.com/highcharts/highcharts/

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