CVE-2026-118252
High
Description
Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.3, Highcharts Dashboards edit-mode sidebar parses component language strings as HTML rather than inserting them as text. An attacker who controls the Dashboards language configuration can provide markup containing event handlers, which execute in the hosting page origin when a user opens the edit-mode sidebar and the affected labels render. This issue is fixed in 4.2.3.
SeverityHigh
CVSS8.4
Exploit probability—
Product@highcharts/dashboards
PublishedOct 28, 2026
First seenNov 4, 2026
Weakness typeCWE-79Cross-site scripting (XSS)
How to fix
Update
- @highcharts/dashboards4.2.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| @highcharts/dashboardsnpm | 1.0.0 ≤ v ≤ 4.2.2 | 4.2.3 |
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