CVE-2025-49037
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages generated by the Authentication and xmlrpc log writer WordPress plugin. When users visit pages containing the malicious scripts, attackers can steal session cookies, redirect users, or perform actions on their behalf. All WordPress sites using affected versions of this plugin are vulnerable.
💻 Affected Systems
- Authentication and xmlrpc log writer WordPress plugin
⚠️ 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.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers steal administrator session cookies, gain full control of the WordPress site, install backdoors, deface the site, or steal sensitive user data.
Likely Case
Attackers steal user session cookies to hijack accounts, redirect users to malicious sites, or display phishing content to steal credentials.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users, preventing any exploitation.
🎯 Exploit Status
Reflected XSS typically requires user interaction (clicking a malicious link) but can be easily weaponized in phishing campaigns.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2.3 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Go to Plugins → Installed Plugins. 3. Find 'Authentication and xmlrpc log writer'. 4. Click 'Update Now' if update is available. 5. If no update appears, manually download version 1.2.3+ from WordPress.org and replace the plugin files.
🔧 Temporary Workarounds
Disable the vulnerable plugin
allTemporarily deactivate the plugin until patched
wp plugin deactivate authentication-and-xmlrpc-log-writer
Implement WAF rules
allConfigure web application firewall to block XSS payloads
🧯 If You Can't Patch
- Disable the Authentication and xmlrpc log writer plugin immediately
- Implement Content Security Policy (CSP) headers to restrict script execution
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Authentication and xmlrpc log writer' versionCheck Version:
wp plugin get authentication-and-xmlrpc-log-writer --field=versionVerify Fix Applied:
Verify plugin version is 1.2.3 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests containing script tags or JavaScript code in parameters
- Multiple failed authentication attempts followed by suspicious requests
Network Indicators:
- HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads
- Traffic patterns showing users being redirected to unexpected domains
SIEM Query:
source="web_server_logs" AND (uri="*<script>*" OR uri="*javascript:*" OR uri="*%3Cscript%3E*")