CVE-2025-23802

6.5 MEDIUM

📋 TL;DR

This stored cross-site scripting (XSS) vulnerability in WP-Revive Adserver allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. The vulnerability affects all versions up to and including 2.2.1 of the WP-Revive Adserver WordPress plugin. WordPress site administrators using this plugin are at risk.

💻 Affected Systems

Products:
  • WP-Revive Adserver WordPress Plugin
Versions: n/a through 2.2.1
Operating Systems: Any OS running WordPress
Default Config Vulnerable: ⚠️ Yes
Notes: All installations of WP-Revive Adserver up to version 2.2.1 are vulnerable. The vulnerability exists in the plugin's input handling during web page generation.

⚠️ Manual Verification Required

This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.

Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).

🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.

Recommended Actions:
  1. Review the CVE details at NVD
  2. Check vendor security advisories for your specific version
  3. Test if the vulnerability is exploitable in your environment
  4. Consider updating to the latest version as a precaution

⚠️ Risk & Real-World Impact

🔴

Worst Case

Attackers could steal administrator session cookies, perform actions as authenticated users, deface websites, or redirect users to malicious sites.

🟠

Likely Case

Attackers inject malicious JavaScript to steal user session cookies or credentials, potentially compromising administrator accounts.

🟢

If Mitigated

With proper input validation and output encoding, the malicious scripts would be rendered harmless as text rather than executed code.

🌐 Internet-Facing: HIGH
🏢 Internal Only: MEDIUM

🎯 Exploit Status

Public PoC: ✅ No
Weaponized: UNKNOWN
Unauthenticated Exploit: ✅ No
Complexity: LOW

Stored XSS vulnerabilities typically require some level of access to input fields, but once exploited, the payload persists and affects all users viewing the compromised page.

🛠️ Fix & Mitigation

✅ Official Fix

Patch Version: 2.2.2 or later

Vendor Advisory: https://patchstack.com/database/wordpress/plugin/wp-revive-adserver/vulnerability/wordpress-wp-revive-adserver-plugin-2-2-1-cross-site-scripting-xss-vulnerability?_s_id=cve

Restart Required: No

Instructions:

1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find WP-Revive Adserver and click 'Update Now'. 4. Verify the plugin version is 2.2.2 or higher.

🔧 Temporary Workarounds

Disable WP-Revive Adserver Plugin

all

Temporarily disable the vulnerable plugin until patched

wp plugin deactivate wp-revive-adserver

Implement Content Security Policy

all

Add CSP headers to restrict script execution sources

Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";

🧯 If You Can't Patch

  • Disable the WP-Revive Adserver plugin immediately
  • Implement web application firewall rules to block XSS payload patterns

🔍 How to Verify

Check if Vulnerable:

Check WordPress admin panel → Plugins → Installed Plugins for WP-Revive Adserver version

Check Version:

wp plugin list --name=wp-revive-adserver --field=version

Verify Fix Applied:

Verify WP-Revive Adserver version is 2.2.2 or higher in WordPress admin panel

📡 Detection & Monitoring

Log Indicators:

  • Unusual POST requests to WP-Revive Adserver endpoints containing script tags or JavaScript
  • Multiple failed login attempts following suspicious plugin activity

Network Indicators:

  • Outbound connections to unknown domains from WordPress server
  • Unexpected JavaScript execution in browser developer tools

SIEM Query:

source="wordpress.log" AND ("wp-revive-adserver" OR "XSS" OR "script" OR "javascript")

🔗 References

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