Quick answers
- Is CVE-2026-118253 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-118253 being exploited in the wild.
- How severe is CVE-2026-118253?
- 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, < 4.2.3, SEMVER:introduced=1.0.0,fixed=4.2.3.
- Is there a fix for CVE-2026-118253?
- 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-2026-118253 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-118253?
- 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 a reflected cross-site scripting (XSS) in the fullscreen button label rendering within Dashboards edit mode. The vulnerable code uses innerHTML to insert language labels into the button element instead of treating them as plain text, allowing HTML and event handler injection. An attacker must control the language options and have viewFullscreen in the context-menu items for the vulnerability to be exploitable; the fix changes innerHTML assignment to textContent.
Affected products
- Highcharts Dashboards 1.0.0 to 4.2.2
Identifiers
- CVE-2026-118253
- GHSA-58g7-7f52-h92c
Timeline
- 2026-10-28: disclosed