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OpenAdvisories
High · 7.2 CVE-2026-116796 EUVD-2026-112279GHSA-mw4f-gj5x-6xr4

Highcharts Core: `javascript:` URL in an `xlink:href` attribute survives text filtering and reaches exported charts

Published Oct 28, 2026 · Updated Oct 29, 2026 · Assigned by GitHub_M

Description

Highcharts JS is a JavaScript charting library based on SVG. From 10.3.2 until 11.4.9, 12.6.2, and 13.1.1, Highcharts accepts an SVG anchor xlink:href attribute without applying the allowed-scheme check used for href and src. An attacker who controls a chart text option can preserve a javascript URL in serialized chart output. When exported or server-rendered SVG is parsed again and a user activates the link, script runs in the origin of that document. This issue is fixed in 11.4.9, 12.6.2 and 13.1.1.

Affected products

VendorProductAffectedFixed
highcharts highcharts >= 10.3.2, < 11.4.9, >= 12.0.0, < 12.6.2, >= 13.0.0, < 13.1.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm highcharts >= 10.3.2, < 11.4.9 11.4.9 GHSA-mw4f-gj5x-6xr4
npm highcharts >= 12.0.0, < 12.6.2 12.6.2 GHSA-mw4f-gj5x-6xr4
npm highcharts >= 13.0.0, < 13.1.1 13.1.1 GHSA-mw4f-gj5x-6xr4

References