CVE-2026-118248
MEDIUM
MEDIUM
Priority: 0.02
BB Relevance:
54/100
Published: 2026-10-28
Modified: 2026-10-29
First seen: 2026-10-29
Status: active
Attack Surface
Network
Low Complexity
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
Low
PR:
Low
UI:
Active
S:
X
AT:
None
VC:
None
VI:
High
VA:
High
Description
Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.2, Highcharts Dashboards edit mode walks editableOptions propertyPath segments without rejecting prototype-related keys. An attacker who controls editableOptions can provide a path through __proto__ or constructor, and a user's edit writes the configured value onto Object.prototype. The property then becomes visible to JavaScript throughout the page, with consequences determined by the consuming application. This issue is fixed in 4.2.2.
Weakness Classification (1)
Affected Software (4)
| Vendor | Product | Version |
|---|---|---|
| @highcharts | dashboards | >= 1.0.0, < 4.2.2 |
| @highcharts | dashboards | >= 1.0.0, < 4.2.2 |
| highcharts | highcharts | < 13.1.0 |
| highcharts | highcharts | < 13.1.0 |