CVE-2025-22796 Overview
CVE-2025-22796 is a reflected Cross-Site Scripting (XSS) vulnerability in the platcom WP-Asambleas WordPress plugin. The flaw affects all versions up to and including 2.85.0. Attackers can inject malicious scripts into web pages generated by the plugin due to improper neutralization of user input [CWE-79].
The vulnerability requires user interaction, such as clicking a crafted link, but does not require authentication. Successful exploitation runs attacker-controlled JavaScript in the victim's browser session under the context of the affected WordPress site.
Critical Impact
Attackers can execute arbitrary JavaScript in a victim's browser, enabling session hijacking, credential theft, and redirection to malicious sites when authenticated WordPress users click a crafted URL.
Affected Products
- platcom WP-Asambleas WordPress plugin (wp-asambleas)
- All versions from n/a through 2.85.0
- WordPress sites running the vulnerable plugin
Discovery Timeline
- 2025-04-17 - CVE-2025-22796 published to NVD
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-22796
Vulnerability Analysis
The vulnerability stems from improper neutralization of input during web page generation in the WP-Asambleas plugin. The plugin reflects user-supplied input back into HTTP responses without proper output encoding or sanitization. This allows attackers to inject HTML and JavaScript payloads that execute in the browser context of any visitor who follows a crafted URL.
Reflected XSS attacks against WordPress administrators are especially valuable to attackers. JavaScript executed in an administrator's session can create new admin accounts, install malicious plugins, or modify site content. The attack scope changes (S:C), meaning the impact extends beyond the vulnerable component to the user's browser session.
Root Cause
The root cause is missing or insufficient input sanitization and output escaping in the WP-Asambleas plugin code. WordPress provides functions such as esc_html(), esc_attr(), and sanitize_text_field() for safe output handling. The plugin fails to apply these functions to one or more user-controllable parameters before reflecting them into rendered HTML.
Attack Vector
The attack vector is network-based and requires user interaction. An attacker crafts a URL containing a malicious JavaScript payload in a vulnerable parameter handled by the plugin. The attacker then delivers the URL through phishing emails, social media, or malicious websites. When a logged-in WordPress user clicks the link, the script executes in their browser within the trusted site's origin.
Technical details and proof-of-concept information are documented in the Patchstack Vulnerability Report.
Detection Methods for CVE-2025-22796
Indicators of Compromise
- HTTP requests to WP-Asambleas plugin endpoints containing <script>, javascript:, onerror=, or onload= patterns in query parameters
- Unexpected creation of WordPress administrator accounts following user clicks on external links
- Outbound requests from administrator browser sessions to unknown domains shortly after visiting WP-Asambleas pages
- Web server access logs showing URL-encoded payloads such as %3Cscript%3E targeting plugin parameters
Detection Strategies
- Deploy a Web Application Firewall (WAF) with rules for reflected XSS payloads targeting WordPress plugin parameters
- Review WordPress access logs for suspicious query strings containing script tags or JavaScript event handlers
- Monitor for anomalous administrator session activity, particularly account creation and plugin installation events
- Use WordPress security plugins that perform integrity checks on installed plugin files and database changes
Monitoring Recommendations
- Enable detailed HTTP request logging on the web server hosting WordPress
- Forward WordPress audit logs to a centralized logging platform for correlation and alerting
- Set alerts for wp-admin actions originating from unusual referrers or following suspicious GET requests
- Track plugin version inventories across WordPress deployments to identify exposed installations
How to Mitigate CVE-2025-22796
Immediate Actions Required
- Identify all WordPress installations running the WP-Asambleas plugin version 2.85.0 or earlier
- Disable the plugin temporarily if a patched version is not yet available
- Restrict access to the WordPress admin interface using IP allowlists where feasible
- Educate administrators about the risks of clicking unverified links to the affected WordPress site
Patch Information
No patched version is specified in the available advisory data. Site owners should check the Patchstack Vulnerability Report and the WordPress plugin repository for an updated release beyond version 2.85.0. Apply the fixed version as soon as it becomes available.
Workarounds
- Deactivate and remove the WP-Asambleas plugin until a patched version is released
- Deploy a WAF rule set that blocks common XSS payloads in query strings targeting the plugin
- Configure Content Security Policy (CSP) headers to restrict inline script execution
- Require administrators to log out of WordPress when not actively managing the site
# Example Content Security Policy header for WordPress
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self'; frame-ancestors 'self'"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
