CVE-2025-53493
📋 TL;DR
This vulnerability is a stored cross-site scripting (XSS) flaw in the Mediawiki MintyDocs Extension, allowing attackers to inject malicious scripts into web pages that persist and execute when viewed by other users. It affects Mediawiki installations using the MintyDocs Extension from version 1.43.X up to but not including 1.43.2. Users of affected versions are at risk if they access pages with injected content.
💻 Affected Systems
- Wikimedia Foundation Mediawiki - MintyDocs Extension
📦 What is this software?
Mintydocs by Yaronkoren
⚠️ Risk & Real-World Impact
Worst Case
An attacker could inject malicious scripts that steal session cookies, redirect users to phishing sites, or perform unauthorized actions on behalf of authenticated users, potentially leading to account compromise or data theft.
Likely Case
Attackers may inject scripts to deface pages, display malicious content, or capture user interactions, causing reputational damage and minor data leakage.
If Mitigated
With proper input validation and output encoding in place, the risk is reduced to minimal, preventing script execution and limiting impact to non-malicious data display.
🎯 Exploit Status
XSS vulnerabilities are often easy to exploit with basic web knowledge, and since it's stored XSS, the payload persists across sessions. No public proof-of-concept has been identified from the provided references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.43.2
Vendor Advisory: https://phabricator.wikimedia.org/T395376
Restart Required: No
Instructions:
1. Update the MintyDocs Extension to version 1.43.2 or later. 2. Use Mediawiki's extension management tools or manually replace the extension files. 3. Clear any caches if applicable. 4. Verify the update by checking the extension version in Mediawiki.
🔧 Temporary Workarounds
Disable MintyDocs Extension
allTemporarily disable the vulnerable extension to prevent exploitation until patching is possible.
Edit LocalSettings.php and comment out or remove the line: wfLoadExtension('MintyDocs');
Implement Input Sanitization
allAdd custom input validation and output encoding in Mediawiki to neutralize malicious scripts.
Modify relevant Mediawiki or extension code to use built-in sanitization functions like htmlspecialchars() or Mediawiki's parser methods.
🧯 If You Can't Patch
- Restrict access to the Mediawiki instance to trusted users only, using network controls or authentication.
- Monitor and audit user-generated content for suspicious scripts or patterns to detect potential exploitation attempts.
🔍 How to Verify
Check if Vulnerable:
Check the version of the MintyDocs Extension in Mediawiki's extension list or by inspecting the extension files; if version is 1.43.X and less than 1.43.2, it is vulnerable.Check Version:
grep -r 'version' /path/to/mediawiki/extensions/MintyDocs/extension.json or check via Mediawiki's Special:Version page.Verify Fix Applied:
After updating, confirm the MintyDocs Extension version is 1.43.2 or higher and test by attempting to inject a benign script to ensure it is properly neutralized.📡 Detection & Monitoring
Log Indicators:
- Look for unusual POST or GET requests containing script tags or JavaScript code in web server logs related to MintyDocs pages.
- Monitor for errors or warnings in Mediawiki logs related to input processing.
Network Indicators:
- Detect outbound connections to suspicious domains from the Mediawiki server that may indicate data exfiltration.
- Watch for anomalous traffic patterns to pages using the MintyDocs Extension.
SIEM Query:
source="web_logs" AND (url="*MintyDocs*" AND (content="<script>" OR content="javascript:"))