CVE-2025-4611: Slim SEO <= 4.5.3 - Authenticated (Contributor+) Stored Cross-Site Scripting via slim_seo_breadcrumbs Shortcode
The Slim SEO – Fast & Automated WordPress SEO Plugin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's slimseobreadcrumbs shortcode in all versions up to, and including, 4.5.3 due to insufficient input sanitization and output escaping on user supplied attributes. 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.
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-4611?
CVE-2025-4611 has a severity rating that indicates it could lead to Stored Cross-Site Scripting vulnerabilities.
How do I fix CVE-2025-4611?
To fix CVE-2025-4611, update the Slim SEO – Fast & Automated WordPress SEO Plugin to version 4.5.4 or later.
What versions are affected by CVE-2025-4611?
CVE-2025-4611 affects all versions of the Slim SEO plugin up to and including 4.5.3.
What type of vulnerability is CVE-2025-4611?
CVE-2025-4611 is classified as a Stored Cross-Site Scripting vulnerability.
Who is affected by CVE-2025-4611?
Users of the Slim SEO – Fast & Automated WordPress SEO Plugin in versions up to 4.5.3 are affected by CVE-2025-4611.