CVE-2026-118255: XSS

Description

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.

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Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://github.com/highcharts/highcharts/commit/45b74403acafbe9f621c4a343506721d9129e991 https://github.com/highcharts/highcharts/pull/25351 https://github.com/highcharts/highcharts/releases/tag/grid-v3.2.0 https://github.com/highcharts/highcharts/security/advisories/GHSA-6hgp-fmhr-mrg4

Frequently Asked Questions

What is CVE-2026-118255? +

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.

How do I check if I'm vulnerable to CVE-2026-118255? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2026-118255