CVE-2025-23741 Overview
CVE-2025-23741 is a reflected Cross-Site Scripting (XSS) vulnerability in the Florian Chaillou Notifications Center plugin for WordPress. The flaw stems from improper neutralization of user-supplied input during web page generation [CWE-79]. All versions of the notifications-center plugin up to and including 1.5.2 are affected.
Attackers can craft a malicious URL that, when clicked by a victim, executes arbitrary JavaScript in the victim's browser session. The scope change indicates the injected script can affect resources beyond the vulnerable component, including administrative contexts.
Critical Impact
Successful exploitation allows attackers to execute arbitrary JavaScript in a victim's authenticated browser session, leading to session theft, account takeover, or unauthorized actions in the WordPress administrative interface.
Affected Products
- Florian Chaillou Notifications Center plugin for WordPress
- All versions from initial release through 1.5.2
- WordPress sites with the notifications-center plugin installed and active
Discovery Timeline
- 2025-03-03 - CVE-2025-23741 published to the National Vulnerability Database (NVD)
- 2026-04-23 - Last updated in NVD database
Technical Details for CVE-2025-23741
Vulnerability Analysis
The vulnerability is classified as Improper Neutralization of Input During Web Page Generation [CWE-79]. The Notifications Center plugin reflects user-controlled input back into HTTP responses without proper output encoding or sanitization.
When a victim visits a crafted URL containing a malicious payload, the plugin embeds the attacker-supplied data into the response page. The browser then parses the injected payload as executable JavaScript within the trust context of the vulnerable WordPress site.
The issue produces a changed security scope, meaning script execution can pivot from the plugin's component into the broader WordPress administrative environment. This elevates the practical impact beyond a simple content injection.
Root Cause
The root cause is missing or insufficient output encoding on request parameters processed by the plugin. Input that originates from query strings, form fields, or other request data flows into HTML response contexts without being escaped using WordPress functions such as esc_html(), esc_attr(), or wp_kses().
Attack Vector
Exploitation requires user interaction. An attacker delivers a malicious link through phishing, forum posts, or third-party sites. When an authenticated WordPress user, particularly an administrator, clicks the link, the payload executes in the user's browser.
The attacker can then exfiltrate session cookies, perform actions as the victim through the WordPress REST API, inject persistent backdoors via plugin or theme editors, or create new privileged accounts. No authentication is required to craft the exploit URL.
No verified exploit code is publicly available. For technical specifics, see the Patchstack WordPress Vulnerability Report.
Detection Methods for CVE-2025-23741
Indicators of Compromise
- HTTP GET or POST requests to Notifications Center plugin endpoints containing <script>, javascript:, onerror=, or onload= substrings in parameters
- WordPress access logs showing unusual referrer headers preceding administrator session activity
- Unexpected creation of WordPress administrator accounts or modifications to plugin and theme files following user click events
- Outbound browser connections to attacker-controlled domains immediately after an administrator visits a crafted link
Detection Strategies
- Inspect web server logs for request parameters containing URL-encoded HTML or JavaScript tokens directed at /wp-content/plugins/notifications-center/ paths
- Deploy a Web Application Firewall (WAF) rule set that flags reflected XSS patterns against known vulnerable plugin routes
- Correlate phishing email telemetry with subsequent administrative WordPress actions to identify successful exploitation chains
Monitoring Recommendations
- Enable WordPress audit logging for user, role, and plugin configuration changes
- Monitor for new or modified files in wp-content/plugins/ and wp-content/themes/ directories
- Alert on outbound HTTP requests from administrator browser sessions to uncategorized or newly registered domains
How to Mitigate CVE-2025-23741
Immediate Actions Required
- Deactivate and remove the Notifications Center plugin from any WordPress site running version 1.5.2 or earlier until a patched release is verified
- Apply WAF rules that block reflected XSS payloads targeting notifications-center plugin URLs
- Force a session reset for all WordPress administrator accounts and rotate authentication keys defined in wp-config.php
- Review WordPress user accounts for unauthorized additions and audit recent plugin and theme file modifications
Patch Information
At the time of NVD publication, the advisory states the issue affects Notifications Center from any version through 1.5.2. Administrators should consult the Patchstack WordPress Vulnerability Report for current patch status and install any vendor-released update above 1.5.2 immediately.
Workarounds
- Remove or disable the notifications-center plugin until a verified fix is published by the vendor
- Restrict access to the WordPress administrative interface using IP allow-listing at the web server or WAF layer
- Configure a strict Content Security Policy (CSP) that disallows inline scripts and untrusted script sources to limit XSS payload execution
# Configuration example: disable the plugin via WP-CLI
wp plugin deactivate notifications-center
wp plugin delete notifications-center
# Example CSP header in Apache to mitigate reflected XSS
Header set Content-Security-Policy "default-src 'self'; script-src 'self'; object-src 'none'; base-uri 'self';"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
