CVE-2025-28923
📋 TL;DR
This CSRF vulnerability in the WordPress No Disposable Email plugin allows attackers to trick authenticated administrators into performing actions that inject malicious scripts. When exploited, it leads to stored cross-site scripting (XSS) attacks. All WordPress sites using No Disposable Email plugin versions up to 2.5.1 are affected.
💻 Affected Systems
- WordPress No Disposable Email 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 inject persistent malicious scripts that steal administrator credentials, hijack sessions, deface websites, or install backdoors when administrators view affected pages.
Likely Case
Attackers create fake forms or links that trick logged-in administrators into unknowingly submitting requests that inject malicious JavaScript into the site, leading to session hijacking or credential theft.
If Mitigated
With proper CSRF protections and input validation, the attack would fail, preventing XSS injection and maintaining site integrity.
🎯 Exploit Status
Exploitation requires social engineering to trick authenticated administrators into clicking malicious links or submitting forms
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 2.5.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'No Disposable Email' plugin. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and replace plugin files.
🔧 Temporary Workarounds
Implement CSRF Protection
allAdd CSRF tokens to all forms and validate them server-side
Input Validation and Sanitization
allImplement strict input validation and output encoding to prevent XSS
🧯 If You Can't Patch
- Disable or remove the No Disposable Email plugin temporarily
- Implement web application firewall (WAF) rules to block CSRF attempts and XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > No Disposable Email > Version. If version is 2.5.1 or earlier, you are vulnerable.Check Version:
wp plugin list --name='no-disposable-email' --field=version (if WP-CLI installed)Verify Fix Applied:
After updating, verify plugin version is higher than 2.5.1 in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin admin endpoints without referrer headers
- Multiple failed CSRF token validations
Network Indicators:
- Requests containing malicious script patterns in form submissions
- Cross-origin requests to plugin admin endpoints
SIEM Query:
source="wordpress.log" AND ("no-disposable-email" OR "nd_email") AND (POST OR "admin-ajax.php") AND NOT referer="your-domain.com"