CVE-2026-118249

CVSS 7.2 (high) · published 2026-10-28

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.

Weakness: CWE-1321

Source: NVD CVE-2026-118249

References

• https://github.com/highcharts/highcharts/commit/d3357705c8f348904441327e32f50ab528c3a205
• https://github.com/highcharts/highcharts/pull/25321
• https://github.com/highcharts/highcharts/releases/tag/v13.1.0
• https://github.com/highcharts/highcharts/security/advisories/GHSA-gfvx-2c2g-38wq

Check your software

Connect an AI agent to the FixLane MCP server or ask the Telegram bot to check what you have installed against incidents with a verified fixed version.