CVE-2026-118248

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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/highcharts/highcharts/commit/05efb9849130461fe61992ea8f58d22edaad978b
https://github.com/highcharts/highcharts/releases/tag/dashboards-v4.2.2
https://github.com/highcharts/highcharts/security/advisories/GHSA-wg5j-9wp8-2ggm

Configurations

No configuration.

History

28 Oct 2026, 18:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-28 18:17

Updated : 2026-10-30 19:18

NVD link : CVE-2026-118248

Mitre link : CVE-2026-118248

CVE.ORG link : CVE-2026-118248

JSON object : View

Products Affected

No product.

CWE

CWE-1321

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

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