CVE-2026-118242
Highcharts Grid: custom icon definition objects written with raw `setAttribute` on `<path>`
Highcharts JS is a JavaScript charting library based on SVG. From 2.3.0 until 3.2.0, Highcharts Grid creates SVG path elements from rendering.icons object definitions and previously copied every child key with setAttribute. An attacker who controls Grid configuration can supply event-handler attribute names in an icon definition. Because custom icons override built-ins, the attacker can replace default sort or pagination icons, and script runs in the hosting page origin when a user hovers over or activates the affected icon. This issue is fixed in 3.2.0.
Fixes and workarounds
Fix
@highcharts/grid-lite (npm): OSV reports a fixed version 3.2.0. Check the advisory for supported release branches.
Source: OSV GHSA-6g3c-p4fg-xv47Fix
@highcharts/grid-pro (npm): OSV reports a fixed version 3.2.0. Check the advisory for supported release branches.
Source: OSV GHSA-6g3c-p4fg-xv47Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| highcharts highcharts |
< 13.1.0 (affected) | CNA: GitHub_M |
| grid-lite @highcharts |
>= 2.3.0, < 3.2.0 (affected) | CNA: GitHub_M |
| grid-pro @highcharts |
>= 2.3.0, < 3.2.0 (affected) | CNA: GitHub_M |
@highcharts/grid-lite@highcharts/grid-lite
npm |
≥ 2.3.0; < 3.2.0 (affected, semver); OSV events: introduced 2.3.0; fixed 3.2.0Source events (semver)Other versions: unaffected |
OSV GHSA-6g3c-p4fg-xv47 |
@highcharts/grid-pro@highcharts/grid-pro
npm |
≥ 2.3.0; < 3.2.0 (affected, semver); OSV events: introduced 2.3.0; fixed 3.2.0Source events (semver)Other versions: unaffected |
OSV GHSA-6g3c-p4fg-xv47 |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 8.5 high |
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/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-6g3c-p4fg-xv47CNA: GitHub_M · x_refsource_CONFIRM
- https://github.com/highcharts/highcharts/commit/8fc970658fee6601625b42da29d27c3ef7c45e30CNA: GitHub_M · x_refsource_MISC
- https://github.com/advisories/GHSA-6g3c-p4fg-xv47OSV / GitHub Security Advisories · advisory
- https://osv.dev/vulnerability/GHSA-6g3c-p4fg-xv47OSV / GitHub Security Advisories · osv
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