CVE-2025-57986
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the WP Subtitle WordPress plugin allows attackers to inject malicious scripts into web pages. When exploited, these scripts execute in victims' browsers, potentially stealing session cookies or performing actions on their behalf. All WordPress sites using WP Subtitle versions up to 3.4.1 are affected.
💻 Affected Systems
- WP Subtitle 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, take over WordPress sites, deface websites, or redirect visitors to malicious sites.
Likely Case
Attackers inject malicious scripts that steal user session data or perform unauthorized actions on behalf of logged-in users.
If Mitigated
With proper input validation and output escaping, malicious scripts would be neutralized before reaching users' browsers.
🎯 Exploit Status
Exploitation requires the ability to input subtitle data, typically through WordPress admin interface or API endpoints.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 3.4.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find WP Subtitle and click 'Update Now'. 4. Verify update to version after 3.4.1.
🔧 Temporary Workarounds
Disable WP Subtitle Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate wp-subtitle
Implement Content Security Policy
allAdd CSP headers to mitigate XSS impact
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to wp-config.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Disable the WP Subtitle plugin immediately
- Implement web application firewall rules to block XSS payloads in subtitle fields
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for WP Subtitle versionCheck Version:
wp plugin get wp-subtitle --field=versionVerify Fix Applied:
Verify WP Subtitle version is greater than 3.4.1 in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual subtitle field entries containing script tags or JavaScript code
- Multiple failed attempts to submit subtitle data with special characters
Network Indicators:
- HTTP requests with subtitle parameters containing script payloads
- Unusual outbound connections from WordPress site after subtitle updates
SIEM Query:
source="wordpress.log" AND ("wp-subtitle" OR "subtitle") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")