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CVE-2026-118253— Highcharts Dashboards: fullscreen labels are parsed as HTML

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 是一个基于 SVG 的 JavaScript 图表库。在 1.0.0 至 4.2.3 版本中，Highcharts Dashboards 的编辑模式会将全屏语言标签解析为 HTML，而非作为纯文本插入。能够控制 Dashboards 语言选项的攻击者可以提交包含事件处理程序（event handlers）的标记代码，这些代码在全屏控件渲染时会在宿主页面的源上下文中执行。该标签仅在启用编辑模式且上下文菜单项中包含 时才可被访问。此问题已在 4.2.3 版本中修复。

CVSS 8.4 · High

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
@highcharts dashboards >= 1.0.0, < 4.2.3 affected
highcharts highcharts < 13.0.0-beta.2 affected
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I. Basic Information for CVE-2026-118253

Vulnerability Information
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Vulnerability Title
Highcharts Dashboards: fullscreen labels are parsed as HTML
Source: CVE Program / CVE List V5
Vulnerability Description
Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.3, Highcharts Dashboards edit mode parses fullscreen language labels as HTML rather than inserting them as text. An attacker who controls Dashboards language options can supply markup with event handlers, which execute in the hosting page origin when the fullscreen control is rendered. The label is reachable only when edit mode is enabled and viewFullscreen is present in the context-menu items. This issue is fixed in 4.2.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/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 < 13.0.0-beta.2 -
@highcharts dashboards >= 1.0.0, < 4.2.3 -

II. Public POCs for CVE-2026-118253

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III. Intelligence Information for CVE-2026-118253

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Other References for CVE-2026-118253 (3)

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-2026-118251 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-2026-116796 7.2 HIGH Highcharts Core: `javascript:` URL in an `xlink:href` attribute survives text filtering an
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