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CVE-2026-118249 Details

Description

Highcharts JS is a JavaScript charting library based on SVG. From 13.0.0 until 13.1.0, Highcharts builds series data columns by using point option keys directly as column IDs. Own enumerable __proto__ and constructor keys from parsed point objects can therefore direct integer-indexed writes to Object.prototype or the Object constructor. The inherited values affect reads and for-in enumeration across the page and can disrupt rendering or alter consuming application behavior without user interaction beyond rendering the chart. This issue is fixed in 13.1.0.

Metrics

CVSS 3.x Severity and Vector Strings:

No CVSS 3.x data is available for this CVE.

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/highcharts/highcharts/commit/d3357705c8f348904441327e32f50ab528c3a205	[email protected]
https://github.com/highcharts/highcharts/pull/25321	[email protected]
https://github.com/highcharts/highcharts/releases/tag/v13.1.0	[email protected]
https://github.com/highcharts/highcharts/security/advisories/GHSA-gfvx-2c2g-38wq	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1321	Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Oct 29, 2026	CVE Modified	CISA-ADP
Oct 28, 2026	New CVE Received	[email protected]