Highcharts Dashboards: sidebar component labels are parsed as HTML
Affects @highcharts/dashboards 1.0.0 through 4.2.2 when untrusted data reaches the language configuration and a user opens the edit mode sidebar. Fixed in 4.2.3.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Specific setups only
- Fix
- Fixed in 13.0.0-beta.2, 4.2.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: total
Summary
Highcharts Dashboards, a JavaScript dashboard library built on the Highcharts charting framework, is affected in its edit-mode sidebar, which renders component labels as HTML. An attacker who can control the Dashboards language configuration could inject scripts that run in the context of the host web page when a user opens the sidebar.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- highcharts highcharts
fixed in 13.0.0-beta.2
- @highcharts dashboards
From 1.0.0 · fixed in 4.2.3
- @highcharts/dashboardsnpm
From 1.0.0 · fixed in 4.2.3
References 3
GitHub · highcharts/highcharts
Questions about CVE-2026-118252
What does this mean?
Sidebar component labels in Highcharts Dashboards are parsed as HTML, so markup with event handlers can run as script in the origin of the page hosting the dashboard.Source: github.com
Am I affected, and how do I check?
Versions 1.0.0 through 4.2.2 of @highcharts/dashboards are in the affected range. The bug needs untrusted data to reach the Dashboards language configuration and a user to open the edit mode sidebar; the installed version can be checked in the project's package.json or lockfile.Source: github.com
What should I do about it?
Upgrade @highcharts/dashboards to 4.2.3, the patched version listed in the advisory.Source: github.com
Is it being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data