CVE Catalog

CVE-2025-12033

MediumCVSS 4.4
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.19%

8th percentile - higher than 8% of all known CVEs

Summary

The Simple Banner plugin for WordPress up to version 3.0.10 is vulnerable to Stored Cross-Site Scripting via the 'pro_version_activation_code' parameter. The plugin fails to properly sanitize input and escape output, allowing authenticated attackers with administrator-level access to inject arbitrary web scripts. This only affects multi-site installations and installations where unfiltered_html has been disabled.

Risk Assessment

Administrators can inject malicious scripts that execute in the browser of users, potentially leading to data theft, session hijacking, or further attacks.

Recommendation

Update the plugin to the latest patched version. If not available, restrict access to the 'pro_version_activation_code' parameter to trusted administrators.

Related vulnerabilities

Original NVD description (English source)

The Simple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'pro_version_activation_code' parameter in all versions up to, and including, 3.0.10 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with administrator-level access, 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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS