CVE-2025-67025
📋 TL;DR
A Cross-Site Scripting (XSS) vulnerability in AnyComment 0.4.4 allows remote attackers to inject malicious scripts into comment sections. This affects websites running the vulnerable AnyComment plugin, potentially compromising user sessions and data.
💻 Affected Systems
- AnyComment (anycomment.io)
📦 What is this software?
Anycomment.io by Anycomment
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal user session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users.
Likely Case
Session hijacking, credential theft, or defacement of comment sections with malicious content.
If Mitigated
Limited impact if input validation and output encoding are properly implemented elsewhere.
🎯 Exploit Status
XSS vulnerabilities typically require minimal technical skill to exploit via crafted comments.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor changelog for versions after 0.4.4
Vendor Advisory: https://anycomment.io/site/changelog
Restart Required: No
Instructions:
1. Check current AnyComment version. 2. Update to the latest version via plugin management interface. 3. Verify update completes successfully.
🔧 Temporary Workarounds
Disable comment section
allTemporarily disable the AnyComment comment functionality until patched.
Navigate to WordPress admin > Plugins > AnyComment > Deactivate
Implement WAF rules
allConfigure Web Application Firewall to block XSS payloads in comment inputs.
Add WAF rule: Detect and block scripts in POST parameters to comment endpoints
🧯 If You Can't Patch
- Implement strict Content Security Policy (CSP) headers to limit script execution.
- Enable input validation and output encoding at the application layer for all user inputs.
🔍 How to Verify
Check if Vulnerable:
Check the installed AnyComment plugin version in your CMS plugin management interface.Check Version:
In WordPress: wp plugin list | grep anycommentVerify Fix Applied:
Confirm the plugin version is updated beyond 0.4.4 and test comment functionality for script injection.📡 Detection & Monitoring
Log Indicators:
- Unusual comment submissions containing script tags or JavaScript code
- Multiple failed comment attempts with encoded payloads
Network Indicators:
- HTTP POST requests to comment endpoints with suspicious parameters
- Outbound connections to external domains from comment pages
SIEM Query:
source="web_logs" AND (url_path="/wp-comments-post.php" OR url_path LIKE "%/comment%") AND (request_body LIKE "%<script>%" OR request_body LIKE "%javascript:%")