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CVE-2026-118250

7.2 high Published
NVD · CVE.org

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.

Fix

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 4

  1. StatusReceived → PublishedNVD modified 2026-10-28 17:59
  2. StatusPublished → ReceivedNVD modified 2026-10-28 18:17
  3. StatusReceived → PublishedNVD modified 2026-10-28 17:59
  4. First seenCVSS 7.2NVD modified 2026-10-28 18:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 4