Highcharts Grid: javascript: URL in credits.href runs script on click

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

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.

Source published

28 Oct 2026 18:17:14 UTC

Source modified

2 Nov 2026 20:29:48 UTC

Observed here

2 Nov 2026 21:57:16 UTC

Source terms

CVE Program Terms of Use

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: cve-program · CVE Program Terms of Use. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · 8.4 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

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.

Source published

Oct 28, 2026, 6:17:14 PM (timezone not stated)

Source modified

Nov 2, 2026, 8:29:48 PM (timezone not stated)

Observed here

6 Nov 2026 00:43:39 UTC

Source terms

ENISA EUVD · source terms and attribution apply

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 4.0 · 8.4 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

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.

Source published

28 Oct 2026 19:17:29 UTC

Source modified

2 Nov 2026 21:17:26 UTC

Observed here

5 Nov 2026 23:38:43 UTC

Source terms

NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · [email protected] · Secondary · 8.4 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

### Impact An attacker who controls the Grid configuration can set `credits.href` to a `javascript:` URL. The value is not validated against an allowed-scheme list before it is applied to the credits link, so activating that link runs attacker-supplied script in the origin of the page hosting the Grid. Exploitation requires that untrusted data reach the Grid configuration and that a user activate the credits link. Script running this way has the same access to page data, storage and session state as the hosting application. ### Workarounds Paste in after the Grid Pro module is imported, before a Grid is created. ```javascript const { AST } = Grid; function sanitize(options) { const credits = options && options.credits; if (credits && typeof credits.href === 'string') { const filtered = AST.filterUserAttributes({ href: credits.href }); if (!filtered.href) { delete credits.href; } } return options; } // Both Grid.grid() and grid.update() funnel through loadUserOptions, so one // hook covers both entry points. const { prototype } = Grid.Grid; const loadUserOptions = prototype.loadUserOptions; prototype.loadUserOptions = function (options, ...rest) { sanitize(options); return loadUserOptions.call(this, options, ...rest); }; ``` ### Obtaining the patched version The patched releases are available from all the usual distribution channels. With npm, upgrade the affected package to the patched version listed above, for example `npm install @highcharts/[email protected]`. If you load Highcharts Grid from a CDN, use a versioned URL, for example `https://cdn.jsdelivr.net/npm/@highcharts/[email protected]/grid-lite.js`. For more on each installation method, see the [installation guide](https://www.highcharts.com/docs/grid/installation).

Source published

28 Oct 2026 19:57:48 UTC

Source modified

28 Oct 2026 20:15:05 UTC

Observed here

28 Oct 2026 20:55:42 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V4 · 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

Publisher rating · HIGH