WordPress Master Blocks plugin 1.4.1-1.4.1.4 - Unauthenticated Stored XSS vulnerability

Unauthenticated Stored XSS vulnerability discovered by Enrico Marcolini - Claudio Marchesini - Dottor Marc in WordPress Plugin Master Blocks versions 1.4.1-1.4.1.4...

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...

CVE-2026-88824

The Master Blocks WordPress plugin versions before 1.5.0 (specifically 1.4.1-1.4.1.4 ) contains an unauthenticated Stored XSS vulnerability. The root cause is a lack of authorization on one of its REST routes , which allows unauthenticated users to update plugin settings. A specific value updated...

EUVD-2026-83507

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...

CVE-2026-88824 Master Blocks 1.4.1 - 1.4.1.4 - Unauthenticated Stored XSS via White Label Settings

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...

CVE-2026-88824 Master Blocks 1.4.1 - 1.4.1.4 - Unauthenticated Stored XSS via White Label Settings

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...

PT-2026-95760

Name of the Vulnerable Software and Affected Versions Master Blocks versions prior to 1.5.0 Description An authorization flaw exists in a REST route that allows unauthenticated users to update plugin settings. This includes the ability to modify a value that is output unescaped in the...

CVE-2026-88824: Improper Neutralization of Input During Web Page Generation

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...

WordPress Master Blocks plugin <= 1.4.1.3 - Missing Authorization to Authenticated (Subscriber+) Arbitrary plugin Upload vulnerability

Missing Authorization to Authenticated Subscriber+ Arbitrary plugin Upload vulnerability discovered by theviper17y in WordPress Plugin Master Blocks versions = 1.4.1.3...

WordPress Master Blocks – Gutenberg Site Builder Plugin <= 1.0.4 is vulnerable to Cross Site Scripting (XSS)

Software Master Blocks – Gutenberg Site Builder Type Plugin Vulnerable versions = 1.0.4 Fixed in N/A OWASP Top 10 A3: Injection Classification Cross Site Scripting XSS CVE CVE-2023-33999 Patch priority Medium CVSS severity Medium 7.1 Developer Claim ownership PSID ff08f9c52cf5 Credits Rafie...

WordPress Master Blocks – Gutenberg Site Builder plugin <= 1.0.4 - Sensitive Information Disclosure vulnerability

Sensitive Information Disclosure vulnerability discovered in WordPress Master Blocks – Gutenberg Site Builder plugin versions = 1.0.4. Solution No patched version available...

WordPress Master Blocks – Gutenberg Site Builder plugin <= 1.0.4 - Toggle The Debug Mode via Cross-Site Request Forgery (CSRF) vulnerability

Toggle The Debug Mode via Cross-Site Request Forgery CSRF vulnerability discovered in WordPress Master Blocks – Gutenberg Site Builder plugin versions = 1.0.4. Solution No patched version available...