Vulnerability-Lookup

CVE-2026-116797 (GCVE-0-2026-116797)

Vulnerability from cvelistv5 – Published: 2026-10-28 17:28 – Updated: 2026-10-28 19:48

Title

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

Summary

Highcharts JS is a JavaScript charting library based on SVG. From 2.0.0 until 3.2.0, Highcharts Grid Pro input renderers copy the cells.renderer.attributes and cells.editMode.renderer.attributes maps to input or select elements with raw setAttribute calls. An attacker who controls column configuration can add event-handler attributes to every rendered row or to the control created when a cell enters edit mode. Script then runs in the hosting page origin when a user hovers over or focuses an input or begins editing. This issue is fixed in Grid Pro 3.2.0.

Severity

8.5 (High)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-28 17:53 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7994 records in the last 180 days details

References

2 references

URL	Tags
https://github.com/highcharts/highcharts/security…	x_refsource_CONFIRM
https://github.com/highcharts/highcharts/commit/5…	x_refsource_MISC

Impacted products

3 products

Vendor	Product	Version	CPE status
highcharts	highcharts	Affected: >= 2.0.0, < 3.2.0	guessed
@highcharts	grid-pro	Affected: >= 2.0.0, < 3.2.0	guessed
@highcharts	dashboards	Affected: >= 3.6.0, < 4.0.0	guessed

Show details on NVD website

JSON

To clipboard

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GHSA-5GHW-9MGR-JVX2

Vulnerability from github – Published: 2026-10-28 19:56 – Updated: 2026-10-28 19:56

Summary

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

Details

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 configuration comes from a source you do not fully control, paste this snippet right after importing the Grid module:

const ALLOWED_RENDERER_ATTRIBUTES = [
    'autofocus', 'checked', 'max', 'maxlength', 'min', 'minlength',
    'multiple', 'pattern', 'placeholder', 'size', 'step'
];

const scrubColumn = (column) => {
    const cells = column?.cells;

    for (const renderer of [cells?.renderer, cells?.editMode?.renderer]) {
        const attributes = renderer?.attributes;

        if (attributes) {
            for (const key of Object.keys(attributes)) {
                if (!ALLOWED_RENDERER_ATTRIBUTES.includes(key.toLowerCase())) {
                    delete attributes[key];
                }
            }
        }
    }

    return column;
};

const scrubOptions = (options) => {
    scrubColumn(options?.columnDefaults);
    (options?.columns || []).forEach(scrubColumn);
    return options;
};

const proto = Grid.Grid.prototype;

const loadUserOptions = proto.loadUserOptions;
proto.loadUserOptions = function (options, ...rest) {
    scrubOptions(Grid.defaultOptions);
    return loadUserOptions.call(this, scrubOptions(options), ...rest);
};

const updateColumn = proto.updateColumn;
proto.updateColumn = function (columnId, options, ...rest) {
    return updateColumn.call(this, columnId, scrubColumn(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/grid-lite@3.2.0. If you load Highcharts Grid from a CDN, use a versioned URL, for example https://cdn.jsdelivr.net/npm/@highcharts/grid-lite@3.2.0/grid-lite.js. For more on each installation method, see the installation guide.

Severity

8.5 (High)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 3.1.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "@highcharts/grid-pro"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.0.0"
            },
            {
              "fixed": "3.2.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "@highcharts/dashboards"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.6.0"
            },
            {
              "fixed": "4.0.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "3.6.0"
      ]
    }
  ],
  "aliases": [
    "CVE-2026-116797"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-28T19:56:02Z",
    "nvd_published_at": "2026-10-28T18:17:14Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nThe input-type cell renderers copy every entry of the renderer\u0027s `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\u0027s `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.\n\n### Workarounds\n\nIf your column configuration comes from a source you do not fully control, paste this snippet right after importing the `Grid` module:\n\n```ts\nconst ALLOWED_RENDERER_ATTRIBUTES = [\n    \u0027autofocus\u0027, \u0027checked\u0027, \u0027max\u0027, \u0027maxlength\u0027, \u0027min\u0027, \u0027minlength\u0027,\n    \u0027multiple\u0027, \u0027pattern\u0027, \u0027placeholder\u0027, \u0027size\u0027, \u0027step\u0027\n];\n\nconst scrubColumn = (column) =\u003e {\n    const cells = column?.cells;\n\n    for (const renderer of [cells?.renderer, cells?.editMode?.renderer]) {\n        const attributes = renderer?.attributes;\n\n        if (attributes) {\n            for (const key of Object.keys(attributes)) {\n                if (!ALLOWED_RENDERER_ATTRIBUTES.includes(key.toLowerCase())) {\n                    delete attributes[key];\n                }\n            }\n        }\n    }\n\n    return column;\n};\n\nconst scrubOptions = (options) =\u003e {\n    scrubColumn(options?.columnDefaults);\n    (options?.columns || []).forEach(scrubColumn);\n    return options;\n};\n\nconst proto = Grid.Grid.prototype;\n\nconst loadUserOptions = proto.loadUserOptions;\nproto.loadUserOptions = function (options, ...rest) {\n    scrubOptions(Grid.defaultOptions);\n    return loadUserOptions.call(this, scrubOptions(options), ...rest);\n};\n\nconst updateColumn = proto.updateColumn;\nproto.updateColumn = function (columnId, options, ...rest) {\n    return updateColumn.call(this, columnId, scrubColumn(options), ...rest);\n};\n```\n\n### Obtaining the patched version\nThe 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/grid-lite@3.2.0`. If you load Highcharts Grid from a CDN, use a versioned URL, for example `https://cdn.jsdelivr.net/npm/@highcharts/grid-lite@3.2.0/grid-lite.js`. For more on each installation method, see the [installation guide](https://www.highcharts.com/docs/grid/installation).",
  "id": "GHSA-5ghw-9mgr-jvx2",
  "modified": "2026-10-28T19:56:03Z",
  "published": "2026-10-28T19:56:02Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/highcharts/highcharts/security/advisories/GHSA-5ghw-9mgr-jvx2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-116797"
    },
    {
      "type": "WEB",
      "url": "https://github.com/highcharts/highcharts/commit/52abd4f8f8db87dd20eab7c01444112380e30e98"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/highcharts/highcharts"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Highcharts Grid Pro: cell-renderer `attributes` map written with raw `setAttribute`"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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