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

影響: npm:highcharts >= 10.3.2, < 11.4.9 → 11.4.9, npm:highcharts >= 12.0.0, < 12.6.2 → 12.6.2, npm:highcharts >= 13.0.0, <= 13.1.0 → 13.1.1

The filter applied to markup in text options checks href, src and a few similar attributes against an allowed-scheme list, but accepts xlink:href without that check, so an SVG anchor whose xlink:href is a javascript: URL passes the filter, whether or not the option is rendered with useHTML. In the live page the attribute is written without the XLink namespace, so browsers do not treat the anchor as a link there. The attribute is preserved verbatim in the chart's serialised output: the SVG produ…

在 GitHub Advisory Database 阅读

2026/10/29 04:55，GitHub Advisory Database 发布了“Highcharts Core: `javascript:` URL in an `xlink:href` attribute survives text filtering and reaches exported charts”（类型：漏洞公告）。严重程度为“高危”（high）。相关技术：JavaScript / Node.js。CVE：CVE-2026-116796。