CVE-2026-118255: Highcharts Grid: javascript: URL in credits.href runs script on click
Highcharts JS is a JavaScript charting library based on SVG. From 2.0.0 until 3.2.0, Highcharts Grid applies credits.href to the credits link without validating the URL scheme. An attacker who controls Grid configuration can provide a javascript URL, and activating the credits link runs script in the origin of the hosting page with access to that application's data and session state.This issue is fixed in Grid Pro 3.2.0.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
Highcharts Gridto a version that resolves this vulnerability.Fixed in 3.2.0
Event History
Frequently Asked Questions
Who is exposed to this issue?
Applications using Highcharts Grid versions from 2.0.0 through versions before 3.2.0 are exposed when an attacker can control Grid configuration, specifically the credits.href value. Exploitation requires a user to activate the credits link.
What does successful exploitation allow?
A javascript: URL supplied in credits.href executes script in the origin of the hosting page when the credits link is clicked. The script can access the application's data and session state available to that origin.
What version fixes the vulnerability?
The issue is fixed in Grid Pro 3.2.0.