CVE-2026-118250

Highcharts JS is a JavaScript charting library based on SVG. From 6.1.0 until 11.4.9, 12.6.1, and 3.1.0, Highcharts follows dot-separated series.keys paths without filtering each segment. An attacker who controls series.keys and matching point data can use a path through __proto__ to assign arbitrary named properties to Object.prototype. Those properties are visible to all JavaScript in the page, and no user interaction is required beyond rendering the chart. This issue is fixed in 11.4.9, 12.6.1, and 3.1.0.

CVSS

No CVSS.

References

Link	Resource
https://github.com/highcharts/highcharts/commit/fd4ee8140732618bbe71295aba55398fb1f8fa9e
https://github.com/highcharts/highcharts/pull/25313
https://github.com/highcharts/highcharts/releases/tag/v13.1.0
https://github.com/highcharts/highcharts/security/advisories/GHSA-rmqc-xvr3-v46c

Configurations

No configuration.

History

28 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-28 18:17

Updated : 2026-10-29 15:08

NVD link : CVE-2026-118250

Mitre link : CVE-2026-118250

CVE.ORG link : CVE-2026-118250

JSON object : View

Products Affected

No product.

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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