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CVE-2026-118248

6.9 medium Published
NVD · CVE.org

Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.2, Highcharts Dashboards edit mode walks editableOptions propertyPath segments without rejecting prototype-related keys. An attacker who controls editableOptions can provide a path through __proto__ or constructor, and a user's edit writes the configured value onto Object.prototype. The property then becomes visible to JavaScript throughout the page, with consequences determined by the consuming application. This issue is fixed in 4.2.2.

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 17:55
  2. StatusPublished → ReceivedNVD modified 2026-10-28 18:17
  3. StatusReceived → PublishedNVD modified 2026-10-28 17:55
  4. First seenCVSS 6.9NVD modified 2026-10-28 18:17

Affected (CPE criteria) 0

NVD has not attached CPE configurations yet.

References 3