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4.4
WordPress Custom Logo Plugin Allows Malicious Content Injection via Admin Settings
CVE-2026-2499
Summary
The Custom Logo plugin for WordPress is vulnerable to a security threat that allows attackers to add malicious content to website pages. This could happen if an attacker with administrator privileges edits certain settings in the plugin. To fix this, update the plugin to the latest version (2.3 or later).
Original title
The Custom Logo plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.2 due to insufficient input sanitization and output esca...
Original description
The Custom Logo plugin for WordPress is vulnerable to Stored Cross-Site Scripting via admin settings in all versions up to, and including, 2.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level permissions and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
nvd CVSS3.1
4.4
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
Published: 26 Feb 2026 · Updated: 12 Mar 2026 · First seen: 6 Mar 2026