Is CVE-2026-118252 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-118252 being exploited in the wild.

How severe is CVE-2026-118252?

High severity, with a CVSS score of 4, published 28 October 2026.

Which products and versions are affected?

Highcharts Dashboards 1.0.0 to 4.2.2; @highcharts/dashboards (npm) >= 1.0.0, <= 4.2.2, SEMVER:introduced=1.0.0,fixed=4.2.3.

Is there a fix for CVE-2026-118252?

Yes. @highcharts/dashboards (npm): upgrade to 4.2.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-118252 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-118252?

Check whether you run Highcharts Dashboards or @highcharts/dashboards (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-118252: Highcharts Dashboards XSS in edit-mode sidebar

Q: Is there a fix for CVE-2026-118252?

Yes. @highcharts/dashboards (npm): upgrade to 4.2.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-118252 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-118252?

Check whether you run Highcharts Dashboards or @highcharts/dashboards (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-118252 · Severity: high · CVSS 4 · Published 2026-10-28

Highcharts Dashboards is a JavaScript library for building interactive dashboard interfaces. Versions before 4.2.3 contain a cross-site scripting (XSS) vulnerability in the sidebar used for editing dashboards: if an attacker controls the language configuration, they can inject malicious code that executes when a legitimate user opens the edit sidebar. This could allow attackers to steal user credentials, manipulate dashboard content, or perform actions on behalf of users.

Technologies: Highcharts Dashboards, @highcharts/dashboards (npm). Vendors: Highcharts, npm.

Quick answers

Is CVE-2026-118252 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-118252 being exploited in the wild.
How severe is CVE-2026-118252?: High severity, with a CVSS score of 4, published 28 October 2026.
Which products and versions are affected?: Highcharts Dashboards 1.0.0 to 4.2.2; @highcharts/dashboards (npm) >= 1.0.0, <= 4.2.2, SEMVER:introduced=1.0.0,fixed=4.2.3.
Is there a fix for CVE-2026-118252?: Yes. @highcharts/dashboards (npm): upgrade to 4.2.3 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-118252 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-118252?: Check whether you run Highcharts Dashboards or @highcharts/dashboards (npm) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

@highcharts/dashboards (npm): upgrade to 4.2.3 or later
```
npm install @highcharts/dashboards@4.2.3
```

Technical details

The vulnerability is an HTML injection in the SidebarPopup component's label rendering. The affected code uses innerHTML to insert component language strings, which parses HTML and executes embedded event handlers. An attacker who can control the Dashboards language configuration can inject markup with event handlers (e.g., onclick attributes) that execute in the hosting page's origin when a user opens edit-mode. The fix changes innerHTML to textContent, treating the input as plain text.

Affected products

Highcharts Dashboards 1.0.0 to 4.2.2

Identifiers

CVE-2026-118252
GHSA-rcqf-f6h2-ccg9

Timeline

2026-10-28: disclosed

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.