--- title: "CVE-2026-118255: Highcharts Grid - Stored XSS" description: "Highcharts Grid 2.0.0 to 3.2.0 contains a stored XSS caused by lack of URL scheme validation in credits.href, letting attackers execute script in the hosting page origin, exploit requires attacker control of Grid configuration." url: https://panop.io/threat-heartbeat/CVE-2026-118255/ --- # CVE-2026-118255 Highcharts Grid - Stored XSS Highcharts Grid 2.0.0 to 3.2.0 contains a stored XSS caused by lack of URL scheme validation in credits.href, letting attackers execute script in the hosting page origin, exploit requires attacker control of Grid configuration. CVSS base score 8.4 /10 High CISA KEV Not listed Public exploit None known [View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-118255) ## Details Type Stored XSS Impact Stored XSS CVSS vector 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X Published 28 October 2026 Updated 29 October 2026 Weakness [CWE-79](https://cwe.mitre.org/data/definitions/79.html) ## Vendor fix Update to Grid Pro 3.2.0 or later. Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them. ## References - [https://nvd.nist.gov/vuln/detail/CVE-2026-118255](https://nvd.nist.gov/vuln/detail/CVE-2026-118255) - [https://github.com/highcharts/highcharts/pull/25351](https://github.com/highcharts/highcharts/pull/25351) - [https://github.com/highcharts/highcharts/releases/tag/grid-v3.2.0](https://github.com/highcharts/highcharts/releases/tag/grid-v3.2.0) - [https://github.com/highcharts/highcharts/security/advisories/GHSA-6hgp-fmhr-mrg4](https://github.com/highcharts/highcharts/security/advisories/GHSA-6hgp-fmhr-mrg4) - [https://github.com/highcharts/highcharts/commit/45b74403acafbe9f621c4a343506721d9129e991](https://github.com/highcharts/highcharts/commit/45b74403acafbe9f621c4a343506721d9129e991) [← All CVEs](https://panop.io/threat-heartbeat/) ## What this record can't tell you - Whether you run the affected software, and where - Whether an attacker can actually reach and exploit it - The misconfigurations that never get a CVE number - What it would cost the business, ranked into what to fix first Panop answers these inside your environment, for this CVE and every other finding. [Book a demo](https://panop.io/demo)