CVE-2026-118249
HIGH
MEDIUM
Priority: 0.03
BB Relevance:
64/100
Published: 2026-10-28
Modified: 2026-10-28
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
No Interaction
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
None
AT:
None
VC:
Low
VI:
High
VA:
High
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.
Weakness Classification (1)
Affected Software (2)
| Vendor | Product | Version |
|---|---|---|
| highcharts | highcharts | >= 13.0.0, < 13.1.0 |
| highcharts | highcharts | >= 13.0.0, < 13.1.0 |