CVE-2025-1123
📋 TL;DR
The Solid Mail WordPress plugin has a stored XSS vulnerability that allows unauthenticated attackers to inject malicious scripts into email fields. When users view pages containing the injected content, the scripts execute in their browsers. All WordPress sites using Solid Mail plugin versions up to 2.1.5 are affected.
💻 Affected Systems
- Solid Mail - SMTP email and logging made by SolidWP
⚠️ 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, redirect users to malicious sites, deface websites, or install backdoors for persistent access.
Likely Case
Attackers inject malicious scripts to steal user session cookies, redirect visitors to phishing sites, or display unwanted content.
If Mitigated
With proper input validation and output escaping, the vulnerability would be prevented entirely.
🎯 Exploit Status
The vulnerability is in email handling functionality accessible to unauthenticated users, making exploitation straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.6 or later
Vendor Advisory: https://plugins.trac.wordpress.org/changeset/3283671/wp-smtp
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Solid Mail plugin. 4. Click 'Update Now' if available. 5. Alternatively, download version 2.1.6+ from WordPress repository and replace the plugin files.
🔧 Temporary Workarounds
Disable Solid Mail Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate solid-mail
Enable WordPress Auto-updates
allConfigure WordPress to automatically update plugins
wp plugin auto-updates enable solid-mail
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with XSS protection rules
- Restrict access to the WordPress admin interface using IP whitelisting
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Solid Mail version. If version is 2.1.5 or lower, you are vulnerable.Check Version:
wp plugin get solid-mail --field=versionVerify Fix Applied:
After updating, verify Solid Mail plugin version shows 2.1.6 or higher in WordPress admin.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to email submission endpoints
- Suspicious script tags in email content fields
Network Indicators:
- Malicious JavaScript payloads in HTTP POST data to WordPress endpoints
SIEM Query:
source="wordpress.log" AND ("solid-mail" OR "wp-smtp") AND (POST AND "email" AND ("script" OR "javascript" OR "onload"))