---
id: CVE-2026-118253
title: 'Highcharts Dashboards: fullscreen labels are parsed as HTML'
summary: >-
  Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until
  4.2.3, Highcharts Dashboards edit mode parses fullscreen language labels as
  HTML rather than inserting them as text. An attacker who controls Dashboards
  langua…
severity: high
cvss: 8.4
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N'
cvssSource: cna
cwe:
  - CWE-79
vendor: highcharts
product: highcharts
affected:
  - highcharts < 13.0.0-beta.2
  - 'dashboards >= 1.0.0, < 4.2.3'
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-29T15:36:39.191164Z'
published: '2026-10-28'
updated: '2026-10-29'
sourceUpdated: '2026-10-29T20:55:13.964Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-118253'
references:
  - url: >-
      https://github.com/highcharts/highcharts/security/advisories/GHSA-58g7-7f52-h92c
    label: >-
      https://github.com/highcharts/highcharts/security/advisories/GHSA-58g7-7f52-h92c
  - url: >-
      https://github.com/highcharts/highcharts/commit/f97213bab745e40f628720c21f4e8b31ee3e768b
    label: >-
      https://github.com/highcharts/highcharts/commit/f97213bab745e40f628720c21f4e8b31ee3e768b
  - url: 'https://github.com/highcharts/highcharts/releases/tag/dashboards-v4.2.3'
    label: 'https://github.com/highcharts/highcharts/releases/tag/dashboards-v4.2.3'
  - url: 'https://github.com/advisories/GHSA-58g7-7f52-h92c'
tags:
  - cve.org
  - ghsa
  - npm
epss: 0.00419
epssPercentile: 0.36218
aliases:
  - GHSA-58g7-7f52-h92c
ecosystem: npm
patched:
  - '@highcharts/dashboards 4.2.3'
ingestedAt: '2026-10-28T20:17:49.701Z'
---

## Overview

Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.3, Highcharts Dashboards edit mode parses fullscreen language labels as HTML rather than inserting them as text. An attacker who controls Dashboards language options can supply markup with event handlers, which execute in the hosting page origin when the fullscreen control is rendered. The label is reachable only when edit mode is enabled and viewFullscreen is present in the context-menu items. This issue is fixed in 4.2.3.

## Affected

- `highcharts < 13.0.0-beta.2`
- `dashboards >= 1.0.0, < 4.2.3`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-118253)

Affected packages:

- `@highcharts/dashboards >= 1.0.0, < 4.2.3`

Patched in:

- `@highcharts/dashboards 4.2.3`

Source: https://github.com/advisories/GHSA-58g7-7f52-h92c