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CVE-2026-118252— Highcharts Dashboards: sidebar component 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 的编辑模式侧边栏会将组件的语言字符串作为 HTML 解析，而非作为纯文本插入。若攻击者能够控制 Dashboards 的语言配置，即可提供包含事件处理程序的标记内容；当用户打开编辑模式侧边栏且受影响的标签被渲染时，这些事件处理程序将在宿主页面的源上下文中执行。该问题已在 4.2.3 版本中修复。

CVSS 8.4 · High

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-2026-118252

Vulnerability Information
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Vulnerability Title
Highcharts Dashboards: sidebar component 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 sidebar parses component language strings as HTML rather than inserting them as text. An attacker who controls the Dashboards language configuration can provide markup containing event handlers, which execute in the hosting page origin when a user opens the edit-mode sidebar and the affected labels render. 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-2026-118252

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III. Intelligence Information for CVE-2026-118252

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Other References for CVE-2026-118252 (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-2026-118253 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-2026-118255 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