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Threat Entry
Updated 2026-09-21
Master Blocks - Security Vulnerability (CVE-2026-88824)
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.
PLUGIN
Master Blocks
CVE-2026-88824
Risk Score