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CVE-2026-118250

CVE-2026-118250 · Highcharts: dotted series.keys paths write to Object.prototype

This page contains facts from public vulnerability sources. Check the original advisory before updating.

Highcharts JS is a JavaScript charting library based on SVG. From 6.1.0 until 11.4.9, 12.6.1, and 3.1.0, Highcharts follows dot-separated series.keys paths without filtering each segment. An attacker who controls series.keys and matching point data can use a path through __proto__ to assign arbitrary named properties to Object.prototype. Those properties are visible to all JavaScript in the page, and no user interaction is required beyond rendering the chart. This issue is fixed in 11.4.9, 12.6.1, and 3.1.0.

CVSS 7.2 · High · EPSS 0.4% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • highcharts

    Versions
    • >= 6.1.0, < 11.4.9: Affected
    • >= 12.0.0, < 12.6.1: Affected
    • >= 13.0.0, < 13.1.0: Affected

    No fix published

  • highcharts npm

    Affected ranges
    • SEMVER: ≥ 12.0.0, < 12.6.1

    Update to 12.6.1

  • highcharts npm

    Affected ranges
    • SEMVER: ≥ 13.0.0, < 13.1.0

    Update to 13.1.0

  • highcharts npm

    Affected ranges
    • SEMVER: ≥ 6.1.0, < 11.4.9

    Update to 11.4.9

Original sources

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