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CVE-2026-86784

Visualizer < 4.0.8 - Contributor+ Stored XSS via JSON Data Source

cve-program · severity unknownCVSS unknownCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-86784

Published

The Visualizer WordPress plugin before 4.0.8 does not sanitise and escape a chart's JSON data source configuration before outputting it back in the chart editor, allowing users with the Contributor role and above to store JavaScript that executes in the browser of any higher-privileged user, such as an administrator, who reviews the affected chart.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-86784

Published

Visualizer

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Unknown",
                    "product": "Visualizer",
                    "versions": [
                        {
                            "status": "affected",
                            "versionType": "semver",
                            "version": "0",
                            "lessThan": "4.0.8"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

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