CVE-2026-118249
CVE-2026-118249 · Highcharts: series column construction writes 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 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.
CVSS 7.2 · High · EPSS 0.4% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
highcharts
- Versions
- >= 13.0.0, < 13.1.0: Affected
No fix published
highcharts npm
- Affected ranges
- SEMVER: ≥ 13.0.0, < 13.1.0
Update to 13.1.0
Original sources
- https://github.com/highcharts/highcharts/security/advisories/GHSA-gfvx-2c2g-38wq
- https://github.com/highcharts/highcharts/pull/25321
- https://github.com/highcharts/highcharts/commit/d3357705c8f348904441327e32f50ab528c3a205
- https://github.com/highcharts/highcharts/releases/tag/v13.1.0
- https://nvd.nist.gov/vuln/detail/CVE-2026-118249