vulnerability / NVI-00009030 / Revision 4
Highcharts Grid parses pagination language options as HTML
GitHub lists this reviewed advisory for @highcharts/grid-lite, @highcharts/grid-pro. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.
This report has not inspected your inventory, configuration, deployed build, reachability or evidence. A catalog listing and a severity score do not establish exposure or compromise.
01 / Meaning
Why it matters
Published affected context helps an owner decide what evidence to gather. This report has not examined your application.
0.419%
FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.36229. Missing scores are unknown.
As of · FIRST EPSS
02 / Applicability
The affected context
Affected versions, configuration prerequisites and known exclusions are public. Confirm each one against the deployed service.
@highcharts/grid-lite
source listed>= 2.0.0, <= 3.1.0
### 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, '<'); } } }; 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 patch
@highcharts/grid-pro
source listed>= 2.0.0, <= 3.1.0
### 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, '<'); } } }; 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 patch
@highcharts/grid-lite
source listedSEMVER: introduced 2.0.0; fixed 3.2.0
### 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, '<'); } } }; 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 patch
@highcharts/grid-pro
source listedSEMVER: introduced 2.0.0; fixed 3.2.0
### 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, '<'); } } }; 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 patch
03 / Response
What to do next
- investigate
Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. FIRST EPSS
- vendor patch
The original advisory lists fixed boundaries 3.2.0 for @highcharts/grid-lite. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
- vendor patch
The original advisory lists fixed boundaries 3.2.0 for @highcharts/grid-pro. Confirm the publisher’s latest guidance.
Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system. GitHub Advisory Database via OSV
A fixed release is not deployment evidence.
Check current vendor support and compatibility. After making a change, verify the deployed build and relevant runtime conditions. Keep the evidence, owner and time. An updated lockfile alone does not prove what is running.
04 / Limits
What this report cannot establish
- Customer inventory, deployment, reachability and exploitation have not been inspected.
05 / Provenance
Sources you can inspect
Each assertion retains its source. Mirrored records may repeat one underlying publisher; additional links are not independent corroboration.
- GHSA-r5wg-q8fc-p6w2 ↗
GitHub Advisory Database · vendor advisory
Observed . GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.
- GHSA-r5wg-q8fc-p6w2 ↗
GitHub Advisory Database via OSV · vendor advisory
Observed . GitHub-origin advisory, CC-BY-4.0; OSV is an aggregate copy, not independent corroboration.
- CVE-2026-118254 ↗
FIRST EPSS · official catalog
Observed . FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.
Public revision history
Only published revisions appear here. Routine fetches do not create a material-change event.
- Revision 4 ·
Source facts changed; compare the preserved prior revision.
- Revision 2 ·
Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.