CVE-2025-31537
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages generated by the Bulk NoIndex & NoFollow Toolkit WordPress plugin. When users visit pages containing these scripts, attackers can steal session cookies, redirect users, or perform actions on their behalf. WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- Bulk NoIndex & NoFollow Toolkit 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 could steal administrator session cookies, gain administrative access to WordPress sites, install backdoors, deface websites, or steal sensitive user data.
Likely Case
Attackers typically use this to steal user session cookies, redirect users to malicious sites, or display phishing content to visitors.
If Mitigated
With proper input validation and output encoding, the malicious scripts would be neutralized before reaching users, preventing exploitation.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly exploited and require minimal technical skill. Attackers typically craft malicious URLs containing the payload.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.17 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Bulk NoIndex & NoFollow Toolkit'. 4. Click 'Update Now' if available. 5. Alternatively, download version 2.17+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate bulk-noindex-nofollow-toolkit
Web Application Firewall
allDeploy WAF rules to block XSS payloads
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Use web application firewall to filter malicious input patterns
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Bulk NoIndex & NoFollow Toolkit version. If version is 2.16 or lower, you are vulnerable.Check Version:
wp plugin get bulk-noindex-nofollow-toolkit --field=versionVerify Fix Applied:
After updating, verify plugin version shows 2.17 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests containing script tags or JavaScript code in parameters
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads
SIEM Query:
source="web_server_logs" AND ("<script" OR "javascript:" OR "%3Cscript" OR "%22%3E%3Cscript")