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 Head Meta Data plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'head-meta-data' post meta field in all versions up to, and including, 20251118 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
Head Meta Data versions up to 20251118 contain a cross-site scripting vulnerability that allows authenticated users to inject malicious scripts. The vulnerability affects the scope beyond the vulnerable component, potentially impacting other users or site functionality. An attacker with low-level account access can exploit this without user interaction to compromise site integrity and read sensitive data.
What an attacker can do
Inject malicious scripts that execute in other users' browsers and read or modify site data.
Potential impact on your site
Authenticated attackers can deface pages, steal user sessions, or modify content visible to other site visitors.
Conditions required to exploit
Attacker must have a low-privilege account on the site; no user interaction required.
Key dates
External resources
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