CVSS base score
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
The Meta Field Block plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'tagName' block attribute in all versions up to, and including, 1.5.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Explanation of Vulnerability in Simple Terms
The Meta Field Block plugin for WordPress contains a cross-site scripting (XSS) vulnerability in versions up to 1.5.2. An authenticated user with low privileges can inject malicious scripts that execute in the browsers of other site users, potentially compromising their accounts or stealing sensitive data. The vulnerability affects the block editor's custom field display functionality.
What an attacker can do
Inject malicious JavaScript that runs in other users' browsers when they view affected content.
Potential impact on your site
Compromised user accounts, stolen session tokens, or malware distribution to site visitors viewing affected pages.
Conditions required to exploit
Attacker must have a WordPress user account with at least low-level privileges (e.g., contributor or editor role).
Key dates
External resources
