{"id":"CVE-2026-118249","published":"2026-10-28T18:17:16.273","lastModified":"2026-10-28T18:17:16.273","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.","cvssScore":null,"cvssSeverity":null,"cvssVector":null,"cwes":["CWE-1321"],"vendors":[],"products":[],"references":[{"url":"https://github.com/highcharts/highcharts/commit/d3357705c8f348904441327e32f50ab528c3a205","tags":[]},{"url":"https://github.com/highcharts/highcharts/pull/25321","tags":[]},{"url":"https://github.com/highcharts/highcharts/releases/tag/v13.1.0","tags":[]},{"url":"https://github.com/highcharts/highcharts/security/advisories/GHSA-gfvx-2c2g-38wq","tags":[]}],"exploitRefs":[{"url":"https://github.com/highcharts/highcharts/commit/d3357705c8f348904441327e32f50ab528c3a205","tags":[]},{"url":"https://github.com/highcharts/highcharts/pull/25321","tags":[]},{"url":"https://github.com/highcharts/highcharts/releases/tag/v13.1.0","tags":[]},{"url":"https://github.com/highcharts/highcharts/security/advisories/GHSA-gfvx-2c2g-38wq","tags":[]}],"hasPoc":true,"ai":null}