CVE-2026-118255
Highcharts Grid: javascript: URL in credits.href runs script on click
Highcharts JS is a JavaScript charting library based on SVG. From 2.0.0 until 3.2.0, Highcharts Grid applies credits.href to the credits link without validating the URL scheme. An attacker who controls Grid configuration can provide a javascript URL, and activating the credits link runs script in the origin of the hosting page with access to that application's data and session state.This issue is fixed in Grid Pro 3.2.0.
Fixes and workarounds
Fix
@highcharts/dashboards (npm): OSV reports a fixed version 4.0.0. Check the advisory for supported release branches.
Source: OSV GHSA-6hgp-fmhr-mrg4Fix
@highcharts/grid-pro (npm): OSV reports a fixed version 3.2.0. Check the advisory for supported release branches.
Source: OSV GHSA-6hgp-fmhr-mrg4Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| highcharts highcharts |
< 13.0.0-beta.2 (affected) | CNA: GitHub_M |
| dashboards @highcharts |
>= 3.2.0, < 4.0.0 (affected) | CNA: GitHub_M |
| grid-pro @highcharts |
>= 2.0.0, < 3.2.0 (affected) | CNA: GitHub_M |
@highcharts/dashboards@highcharts/dashboards
npm |
≥ 3.2.0; < 4.0.0 (affected, semver); OSV events: introduced 3.2.0; fixed 4.0.0Source events (semver)Other versions: unaffected |
OSV GHSA-6hgp-fmhr-mrg4 |
@highcharts/grid-pro@highcharts/grid-pro
npm |
≥ 2.0.0; < 3.2.0 (affected, semver); OSV events: introduced 2.0.0; fixed 3.2.0Source events (semver)Other versions: unaffected |
OSV GHSA-6hgp-fmhr-mrg4 |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.4 high |
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 | CNA: GitHub_M |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/highcharts/highcharts/security/advisories/GHSA-6hgp-fmhr-mrg4CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/highcharts/highcharts/pull/25351CNA: GitHub_M · x_refsource_MISC
- https://github.com/highcharts/highcharts/commit/45b74403acafbe9f621c4a343506721d9129e991CNA: GitHub_M · x_refsource_MISC
- https://github.com/highcharts/highcharts/releases/tag/grid-v3.2.0CNA: GitHub_M · x_refsource_MISC
- https://github.com/advisories/GHSA-6hgp-fmhr-mrg4OSV / GitHub Security Advisories · advisory
- https://osv.dev/vulnerability/GHSA-6hgp-fmhr-mrg4OSV / GitHub Security Advisories · osv
For agents and automation
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