CVE-2023-6692 MEDIUM

CVE-2023-6692: Ultimate Blocks – WordPress Blocks Plugin <= 3.0.8 - Authenticated(Contributor+) Stored Cross-Site Scripting via metabox

Vendor Ultimateblocks
Product Ultimate Blocks – 25+ Gutenberg Blocks for Block Editor
Weakness CWE-79 · XSS
Published June 19, 2024
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

6.4/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality Low
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

What the vulnerability does

01Description

The Ultimate Blocks – WordPress Blocks Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's tab anchor metabox in all versions up to, and including, 3.0.8 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers with contributor-level and above permissions to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Key dates

02Disclosure timeline

June 19, 2024 CVE published
April 8, 2026 Record updated