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CVE-2026-116796— Highcharts Core: `javascript:` URL in an `xlink:href` attribute survives text filtering and reaches exported charts

Quick assessment

Affected
highcharts highcharts
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Highcharts JS 是一款基于 SVG 的 JavaScript 图表库。在版本 10.3.2 至 11.4.9、12.6.2 和 13.1.1 期间，Highcharts 在接收 SVG 锚点（anchor）的 属性时，未对 和 属性所采用的“允许协议方案”（allowed-scheme）检查机制进行同样处理。若攻击者能够控制图表的文字选项，则可在序列化的图表输出中保留包含 协议的 URL。当导出的或服务器端渲染的 SVG 文件被再次解析，且用户激活该链接时，恶意脚本将在该文档的源域中执行。此问题已在版本

CVSS 7.2 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 3

VendorProduct Version RangeStatus
highcharts highcharts >= 10.3.2, < 11.4.9 affected
>= 12.0.0, < 12.6.2 affected
>= 13.0.0, < 13.1.1 affected
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I. Basic Information for CVE-2026-116796

Vulnerability Information
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Vulnerability Title
Highcharts Core: `javascript:` URL in an `xlink:href` attribute survives text filtering and reaches exported charts
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
highcharts highcharts >= 10.3.2, < 11.4.9 -

II. Public POCs for CVE-2026-116796

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III. Intelligence Information for CVE-2026-116796

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Patches & Fixes for CVE-2026-116796 (1)

Vendor Advisories for CVE-2026-116796 (1)

Vendor Pages for CVE-2026-116796 (1)

Same Patch Batch · highcharts · 2026-10-28 · 16 CVEs total

CVE-2026-118245 8.6 HIGH Highcharts Dashboards: `chartConstructor` is an unchecked lookup into the Highcharts names
CVE-2026-118254 8.6 HIGH Highcharts Grid: pagination language options are parsed as HTML
CVE-2026-116797 8.5 HIGH Highcharts Grid Pro: cell-renderer `attributes` map written with raw `setAttribute`
CVE-2026-118242 8.5 HIGH Highcharts Grid: custom icon definition objects written with raw `setAttribute` on `<path>
CVE-2026-118246 8.4 HIGH Highcharts Core: `breadcrumbs.style` keys become SVG event-handler attributes
CVE-2026-118253 8.4 HIGH Highcharts Dashboards: fullscreen labels are parsed as HTML
CVE-2026-118251 8.4 HIGH Highcharts: javascript: URL in credits.href runs script on click
CVE-2026-118252 8.4 HIGH Highcharts Dashboards: sidebar component labels are parsed as HTML
CVE-2026-118255 8.4 HIGH Highcharts Grid: javascript: URL in credits.href runs script on click
CVE-2026-118244 7.2 HIGH Highcharts Core: AST `DOMParser` fallback assigns unsanitized markup to `innerHTML` during
CVE-2026-118250 7.2 HIGH Highcharts: dotted series.keys paths write to Object.prototype
CVE-2026-118249 7.2 HIGH Highcharts: series column construction writes to Object.prototype
CVE-2026-118247 6.9 MEDIUM Highcharts Dashboards / Grid Pro: `DataTable.setCell` and column writers treat `__proto__`
CVE-2026-118248 6.9 MEDIUM Highcharts Dashboards: editableOptions.propertyPath writes to Object.prototype
CVE-2026-118243 5.3 MEDIUM Highcharts Dashboards: `__proto__` data table id writes sync listeners to `Object.prototyp

IV. Related Vulnerabilities

Same product: highcharts
Same vendor: highcharts
Same weakness: CWE-79