CVE-2025-14452: WP Customer Reviews XSS Vulnerability

CVE-2025-14452 Overview

The WP Customer Reviews plugin for WordPress is vulnerable to Reflected Cross-Site Scripting (XSS) via the wpcr3_fname parameter in all versions up to, and including, 3.7.5 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

Critical Impact

Unauthenticated attackers can execute arbitrary JavaScript in the context of a victim's browser session, potentially leading to session hijacking, credential theft, or malicious actions performed on behalf of authenticated WordPress administrators.

Affected Products

• WP Customer Reviews plugin versions up to and including 3.7.5
• WordPress installations using vulnerable WP Customer Reviews versions

Discovery Timeline

• 2026-02-19 - CVE CVE-2025-14452 published to NVD
• 2026-02-19 - Last updated in NVD database

Technical Details for CVE-2025-14452

Vulnerability Analysis

This Reflected Cross-Site Scripting vulnerability exists in the WP Customer Reviews WordPress plugin due to inadequate handling of user-supplied input in the wpcr3_fname parameter. The plugin fails to properly sanitize input data before reflecting it back to users and does not implement sufficient output escaping, allowing malicious JavaScript payloads to be executed in the victim's browser context.

The vulnerability is classified as CWE-79 (Improper Neutralization of Input During Web Page Generation), which represents a common weakness in web applications where user input is incorporated into output without proper encoding or validation. When exploited, an attacker can craft a malicious URL containing JavaScript code that, when clicked by a victim, executes within the security context of the vulnerable WordPress site.

Root Cause

The root cause of this vulnerability is insufficient input sanitization and output escaping in the plugin's handling of the wpcr3_fname parameter. The vulnerable code can be found in the wp-customer-reviews-3.php file, specifically around lines 205 and 835 as referenced in the WordPress plugin repository. The parameter value is reflected back to users without being properly escaped using WordPress's built-in sanitization functions such as esc_html(), esc_attr(), or wp_kses().

Attack Vector

The attack vector is network-based and requires no authentication or special privileges to exploit. An attacker constructs a malicious URL containing a JavaScript payload in the wpcr3_fname parameter and distributes this link to potential victims through phishing emails, social media, or other communication channels. When a logged-in WordPress user (particularly administrators) clicks the malicious link, the JavaScript executes in their browser with the same privileges as the user, potentially allowing:

• Session cookie theft leading to account takeover
• Performing administrative actions on behalf of the victim
• Defacement of the WordPress site
• Injection of additional malicious content
• Redirecting users to phishing or malware-hosting sites

The exploitation requires user interaction (clicking a malicious link), but the attack can be made more convincing through social engineering techniques.

Detection Methods for CVE-2025-14452

Indicators of Compromise

• Suspicious URL parameters containing encoded JavaScript or HTML tags in requests to pages using WP Customer Reviews
• Web server logs showing requests with wpcr3_fname parameters containing unusual characters such as <script>, javascript:, or encoded variants
• Reports from users about unexpected browser behavior or redirects when interacting with customer review forms

Detection Strategies

• Implement Web Application Firewall (WAF) rules to detect and block XSS payloads in the wpcr3_fname parameter
• Monitor web server access logs for requests containing potential XSS patterns targeting the plugin
• Deploy browser-based Content Security Policy (CSP) headers to mitigate the impact of successful XSS attacks
• Use WordPress security plugins with real-time monitoring capabilities to detect exploitation attempts

Monitoring Recommendations

• Enable detailed logging for all requests to WordPress plugin endpoints
• Configure alerts for patterns matching common XSS payloads in URL parameters
• Regularly review WordPress site integrity for unauthorized modifications that may indicate post-exploitation activity
• Monitor for anomalous administrative actions that could indicate session hijacking

How to Mitigate CVE-2025-14452

Immediate Actions Required

• Update the WP Customer Reviews plugin to the latest patched version immediately
• Review WordPress access logs for evidence of exploitation attempts targeting the wpcr3_fname parameter
• Audit recent administrative actions for any unauthorized changes
• Consider temporarily disabling the plugin if an immediate update is not possible

Patch Information

Security patches have been released to address this vulnerability. The fixes can be reviewed in WordPress Change Set #3417719 and WordPress Change Set #3417782. Additional technical analysis is available from Wordfence Vulnerability Analysis.

Users should update to a version newer than 3.7.5 through the WordPress admin dashboard or by manually downloading the patched version from the WordPress plugin repository.

Workarounds

• Implement a Web Application Firewall (WAF) rule to filter and sanitize the wpcr3_fname parameter
• Temporarily disable the WP Customer Reviews plugin until the patch can be applied
• Deploy Content Security Policy (CSP) headers to restrict inline script execution and mitigate XSS impact
• Restrict access to customer review submission pages to authenticated users only as a temporary measure

# Example WAF rule for ModSecurity to block XSS attempts in wpcr3_fname parameter
SecRule ARGS:wpcr3_fname "@detectXSS" \
    "id:100001,\
    phase:2,\
    deny,\
    status:403,\
    log,\
    msg:'XSS Attack Detected in wpcr3_fname parameter - CVE-2025-14452'"