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Type a plugin or theme and the version you run, and we’ll show every known vulnerability that affects it, from the 390,007 records in our vulnerability database. The version is listed under Plugins in your WordPress dashboard.
Plugin · ultimate-blocks-for-gutenberg
Master Blocks
1 known vulnerability on record. Add your version above to see which ones affect you.
Sep 19, 2026Master Blocks: Does not have authorisation on one of its REST routesCVE-2026-88824 · fixed in 1.5.0 · reported by WPScanHigh 8.8
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.
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