Highcharts Grid parses pagination language options as HTML

### Impact The pagination language strings are written into the DOM as markup rather than as text. An attacker who controls those language options can supply elements carrying event handlers, and those handlers execute in the origin of the page hosting the Grid when the pagination controls render. Exploitation requires that untrusted data reach the Grid language configuration and that pagination be enabled on the Grid. ### Workarounds Run this once after loading the Grid, before creating any grid: ```javascript { const Pagination = Grid.Pagination; const escapeLang = (pagination) => { const lang = pagination.lang; if (!lang) { return; } for (const key of ['pageInfo', 'pageSizeLabel']) { if (typeof lang[key] === 'string') { lang[key] = lang[key].replace(/</g, '&lt;'); } } }; for (const name of ['updatePageInfo', 'renderPageSizeSelector']) { const original = Pagination.prototype[name]; Pagination.prototype[name] = function (...args) { escapeLang(this); return original.apply(this, args); }; } } ``` ### 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 19:57:34 UTC

Source modified

28 Oct 2026 20:15:06 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:N/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N

Publisher rating · HIGH