CVE-2025-58847: WN Flipbox Pro CSRF Vulnerability

CVE-2025-58847 Overview

CVE-2025-58847 is a Cross-Site Request Forgery (CSRF) vulnerability affecting the WN Flipbox Pro WordPress plugin developed by Yaidier. This vulnerability enables attackers to perform Reflected Cross-Site Scripting (XSS) attacks against authenticated users. The flaw exists due to insufficient CSRF token validation, allowing malicious actors to craft requests that execute arbitrary JavaScript in the context of a victim's browser session.

Critical Impact

Attackers can leverage this CSRF vulnerability to chain with Reflected XSS, potentially stealing session cookies, performing unauthorized actions on behalf of authenticated administrators, or compromising WordPress site integrity.

Affected Products

• WN Flipbox Pro WordPress Plugin versions up to and including 2.1
• WordPress installations with WN Flipbox Pro (wn-flipbox-pro) plugin active

Discovery Timeline

• 2025-09-05 - CVE-2025-58847 published to NVD
• 2026-04-23 - Last updated in NVD database

Technical Details for CVE-2025-58847

Vulnerability Analysis

This vulnerability combines two distinct web application weaknesses: Cross-Site Request Forgery (CWE-352) and Reflected Cross-Site Scripting. The CSRF component allows attackers to trick authenticated users into submitting malicious requests without their knowledge. When combined with Reflected XSS, the attack can execute arbitrary JavaScript code in the victim's browser context.

The vulnerability affects the WN Flipbox Pro plugin, which provides flip box functionality for WordPress websites. Without proper CSRF protection mechanisms such as nonce verification on sensitive form handlers, attackers can craft malicious links or embed hidden forms on external websites that, when visited by an authenticated WordPress administrator, will execute unauthorized actions.

Root Cause

The root cause of this vulnerability is the absence or improper implementation of CSRF protection tokens (nonces) in form handlers within the WN Flipbox Pro plugin. WordPress provides built-in CSRF protection through its nonce system (wp_nonce_field() and wp_verify_nonce()), but the vulnerable plugin versions fail to properly implement these security controls on one or more endpoints. Additionally, user-supplied input is not adequately sanitized before being reflected back in HTTP responses, enabling the Reflected XSS attack vector.

Attack Vector

The attack is network-based and requires user interaction to succeed. An attacker would typically craft a malicious URL or create a webpage containing a hidden form that targets the vulnerable plugin endpoint. The attack flow involves:

1. The attacker identifies a vulnerable endpoint in the WN Flipbox Pro plugin that lacks CSRF protection
2. A malicious link or form is crafted containing XSS payload in the request parameters
3. The attacker tricks an authenticated WordPress administrator into clicking the link or visiting the malicious page
4. The victim's browser submits the forged request with their valid session credentials
5. The server processes the request and reflects the malicious script back to the user
6. The XSS payload executes in the context of the victim's authenticated session

The vulnerability can be exploited from any network location without requiring prior authentication, though the victim must be authenticated to the WordPress site for the attack to succeed with elevated privileges.

Detection Methods for CVE-2025-58847

Indicators of Compromise

• Unexpected or unauthorized changes to WN Flipbox Pro plugin settings
• Unusual administrative activity in WordPress access logs without corresponding legitimate user actions
• JavaScript execution errors in browser developer consoles related to unknown external scripts
• Suspicious referer headers pointing to external domains in plugin-related requests

Detection Strategies

• Monitor WordPress access logs for requests to WN Flipbox Pro endpoints with unusual query string parameters
• Implement Content Security Policy (CSP) headers to detect and prevent unauthorized script execution
• Review web application firewall (WAF) logs for patterns consistent with CSRF or XSS attack attempts
• Audit plugin-related HTTP requests for missing or invalid nonce tokens

Monitoring Recommendations

• Enable detailed logging for WordPress plugin activities and administrative actions
• Configure alerts for bulk or rapid changes to plugin settings from single sessions
• Deploy browser-based XSS detection tools or extensions for administrative users
• Regularly review and correlate WAF alerts with WordPress audit logs

How to Mitigate CVE-2025-58847

Immediate Actions Required

• Update WN Flipbox Pro plugin to a patched version when available from the developer
• Consider temporarily deactivating the WN Flipbox Pro plugin until a security patch is released
• Implement a Web Application Firewall (WAF) with CSRF and XSS protection rules
• Review and restrict administrative access to only trusted IP addresses where possible

Patch Information

Organizations should monitor the Patchstack WordPress Vulnerability Database for updates regarding official patches from the plugin developer. Users running WN Flipbox Pro version 2.1 or earlier should update immediately once a patched version becomes available.

Workarounds

• Temporarily disable the WN Flipbox Pro plugin if it is not essential to site functionality
• Implement strict Content-Security-Policy headers to mitigate XSS impact: Content-Security-Policy: default-src 'self'; script-src 'self';
• Use browser extensions that provide CSRF protection for administrative sessions
• Train WordPress administrators to recognize suspicious links and avoid clicking untrusted URLs while logged in

# Temporarily disable the vulnerable plugin via WP-CLI
wp plugin deactivate wn-flipbox-pro

# Verify plugin status
wp plugin status wn-flipbox-pro

# Add CSP header in .htaccess (Apache)
# Header set Content-Security-Policy "default-src 'self'; script-src 'self';"