Vulnerability · Published Oct 28, 2026 · Assigned by GitHub_M
CVE-2026-116796Highcharts Core: `javascript:` URL in an `xlink:href` attribute survives text filtering and reaches exported charts
High 7.2
In plain English
A high-severity cross-site scripting in highcharts from highcharts. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Highcharts JS is a JavaScript charting library based on SVG. From 10.3.2 until 11.4.9, 12.6.2, and 13.1.1, Highcharts accepts an SVG anchor xlink:href attribute without applying the allowed-scheme check used for href and src. An attacker who controls a chart text option can preserve a javascript URL in serialized chart output. When exported or server-rendered SVG is parsed again and a user activates the link, script runs in the origin of that document. This issue is fixed in 11.4.9, 12.6.2 and 13.1.1.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| npm | highcharts | 11.4.9 | GHSA-mw4f-gj5x-6xr4 |
| npm | highcharts | 12.6.2 | GHSA-mw4f-gj5x-6xr4 |
| npm | highcharts | 13.1.1 | GHSA-mw4f-gj5x-6xr4 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| highcharts | highcharts | >= 10.3.2, < 11.4.9>= 12.0.0, < 12.6.2>= 13.0.0, < 13.1.1 |
Weakness: CWE-79 · Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N