CVE-2026-118242 Highcharts Grid: custom icon definition objects written with raw `setAttribute` on `<path>`
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-118242?
CVE-2026-118242 is a high-severity vulnerability in @highcharts grid-lite, published on 28 Oct 2026.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-118242?
4 open source packages ship an affected version, including @highcharts/grid-lite and @highcharts/grid-pro.
| Package | Affected | Fixed in |
|---|---|---|
@highcharts/grid-lite npm | From 2.3.0 | 3.2.0 |
@highcharts/grid-lite npm | From 2.3.0 | 3.2.0 |
@highcharts/grid-pro npm | From 2.3.0 | 3.2.0 |
@highcharts/grid-pro npm | From 2.3.0 | 3.2.0 |
How do I fix CVE-2026-118242?
Upgrade @highcharts/grid-lite to 3.2.0 or later.
Is CVE-2026-118242 being exploited?
There is no known exploitation of CVE-2026-118242 in the wild and no public exploit code.
Sources
Also known as GHSA-6g3c-p4fg-xv47.