CVE-2025-12033: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in rpetersen29 Simple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website
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.
AI Analysis
Technical Summary
The Simple Banner WordPress plugin allows adding multiple banners or notifications to websites. Versions up to 3.0.10 are vulnerable to stored XSS via the 'pro_version_activation_code' parameter due to improper neutralization of input during web page generation (CWE-79). An attacker with administrator privileges on a multi-site or restricted unfiltered_html installation can inject malicious scripts that execute when users view the affected pages. The CVSS 3.1 vector indicates network attack vector, high attack complexity, high privileges required, no user interaction, and impacts confidentiality and integrity with no availability impact.
Potential Impact
Successful exploitation allows an authenticated administrator on a multi-site or restricted unfiltered_html WordPress installation to inject arbitrary scripts that execute in the context of users visiting the affected pages. This can lead to partial confidentiality and integrity loss of the affected site. There is no known exploitation in the wild, and the impact is limited by the requirement for high privileges and specific installation configurations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict administrator access to trusted users only and consider disabling or replacing the plugin on multi-site or unfiltered_html-disabled installations. Monitor vendor channels for updates or patches addressing this vulnerability.
CVE-2025-12033: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') in rpetersen29 Simple Banner – Easily add multiple Banners/Bars/Notifications/Announcements to the top or bottom of your website
Description
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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The Simple Banner WordPress plugin allows adding multiple banners or notifications to websites. Versions up to 3.0.10 are vulnerable to stored XSS via the 'pro_version_activation_code' parameter due to improper neutralization of input during web page generation (CWE-79). An attacker with administrator privileges on a multi-site or restricted unfiltered_html installation can inject malicious scripts that execute when users view the affected pages. The CVSS 3.1 vector indicates network attack vector, high attack complexity, high privileges required, no user interaction, and impacts confidentiality and integrity with no availability impact.
Potential Impact
Successful exploitation allows an authenticated administrator on a multi-site or restricted unfiltered_html WordPress installation to inject arbitrary scripts that execute in the context of users visiting the affected pages. This can lead to partial confidentiality and integrity loss of the affected site. There is no known exploitation in the wild, and the impact is limited by the requirement for high privileges and specific installation configurations.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict administrator access to trusted users only and consider disabling or replacing the plugin on multi-site or unfiltered_html-disabled installations. Monitor vendor channels for updates or patches addressing this vulnerability.
Technical Details
- Data Version
- 5.1
- Assigner Short Name
- Wordfence
- Date Reserved
- 2025-10-21T17:34:11.068Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 68f87dba01fe9fee6c20e44e
Added to database: 10/22/2025, 6:46:18 AM
Last enriched: 4/9/2026, 4:03:09 PM
Last updated: 5/10/2026, 4:17:43 AM
Views: 139
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