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CVE-2026-88824

Master Blocks 1.4.1 - 1.4.1.4 - Unauthenticated Stored XSS via White Label Settings

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

Original advisory

cve-program · CVE-2026-88824

Published

The Master Blocks WordPress plugin before 1.5.0 does not have authorisation on one of its REST routes, allowing unauthenticated users to update its settings, including a value that is output unescaped in the admin area, leading to Stored XSS that executes in the session of any administrator visiting a wp-admin page.

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-88824

Published

Master Blocks

Vendor product

Publisher's version information

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

{
                    "vendor": "Unknown",
                    "product": "Master Blocks",
                    "versions": [
                        {
                            "status": "affected",
                            "versionType": "semver",
                            "version": "1.4.1",
                            "lessThan": "1.5.0"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

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