Highcharts Grid Pro: cell-renderer attributes map written with raw setAttribute

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

8.5 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N · score source

EPSS

• CVE-2026-116797: 0.32% estimated exploitation activity in the next 30 days; percentile 24.58 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

Impact The input-type cell renderers copy every entry of the renderer's `attributes` option onto the input or select element they create, without checking the attribute names. An attacker who controls the Grid configuration can supply entries under a column's `cells.renderer.attributes` or `cells.editMode.renderer.attributes` whose names are event handlers, and those handlers execute in the origin of the page hosting the Grid. A view renderer places the handler on the input rendered in every row of the column as soon as the Grid renders; an edit-mode renderer places it on the input created when a cell enters edit mode, and that input is focused immediately, so a `focus` handler runs as soon as the user starts editing. Exploitation requires that untrusted data reach the Grid configuration and that a user hover over or focus one of the rendered inputs, or begin editing a cell. The Pro DataGrid that shipped inside the Dashboards package is included.

Workarounds If your column…

Published by the source

28 Oct 2026, 19:56 UTC

Last modified by the source

28 Oct 2026, 20:15 UTC

Source last checked

29 Oct 2026, 06:00 UTC

1. Revision 2 · amended · 29 Oct 2026

   Amended from osv record GHSA-5ghw-9mgr-jvx2

2. Revision 1 · created · 28 Oct 2026

   Published from ghsa record GHSA-5ghw-9mgr-jvx2

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# Patch Next advisory brief: CVE-2026-116797

Advisory: Highcharts Grid Pro: cell-renderer `attributes` map written with raw `setAttribute`
IDs: CVE-2026-116797, GHSA-5ghw-9mgr-jvx2
Record: https://patchnext.com/advisories/cve-2026-116797 (revision 2, source checked 29 Oct 2026, 06:00 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.5)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: @highcharts/grid-pro 3.2.0; @highcharts/dashboards 4.0.0. A vendor fix does not mean a deployment is fixed.

## Affected components
- npm @highcharts/grid-pro: affected >= 2.0.0, < 3.2.0; fixed in 3.2.0
- npm @highcharts/dashboards: affected >= 3.6.0, < 4.0.0; fixed in 4.0.0

## Suggested inspection (read-only)
- `npm ls @highcharts/grid-pro --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.
- `npm ls @highcharts/dashboards --all`: lists every installed copy and version, including transitive ones. Run in the project root after `npm ci`.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on @highcharts/grid-pro, @highcharts/dashboards.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-5ghw-9mgr-jvx2 (GitHub-reviewed advisory GHSA-5ghw-9mgr-jvx2 lists affected ranges: npm @highcharts/grid-pro >=2.0.0 =3.6.0 <=3.6.0)
- Verified: https://osv.dev/vulnerability/GHSA-5ghw-9mgr-jvx2 (OSV record GHSA-5ghw-9mgr-jvx2 lists affected ranges: npm @highcharts/grid-pro >=2.0.0 =3.6.0 <4.0.0 (fixed))

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