JavaScript Charting Library Vulnerability in Highcharts by Highsoft
CVE-2026-118242

8.5HIGH

Key Information:

Vendor

Highcharts

Status
Highcharts
Grid-lite
Grid-pro
Vendor
CVE Published:
28 October 2026

What is CVE-2026-118242?

Highcharts JS, a popular JavaScript charting library, has a security issue affecting versions 2.3.0 through 3.2.0. This vulnerability allows attackers to manipulate SVG path elements created by the Highcharts Grid. If an attacker gains control over Grid configurations, they can define custom event-handler attributes in icon definitions, which replaces the default sorting or pagination icons. This manipulation can lead to malicious scripts executing in the context of the hosting page when users interact with the compromised icons. The vulnerability was addressed in version 3.2.0.

Affected Version(s)

grid-lite >= 2.3.0, < 3.2.0

grid-pro >= 2.3.0, < 3.2.0

highcharts < 13.1.0

References

https://github.com/highcharts/highcharts/security/advisor...
x_refsource_CONFIRM
https://github.com/highcharts/highcharts/commit/8fc970658...
x_refsource_MISC

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.