CVE-2025-62913
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Opal Service WordPress plugin allows attackers to inject malicious scripts into web pages. When users view affected pages, the scripts execute in their browsers, potentially stealing session cookies or performing actions on their behalf. All WordPress sites using vulnerable versions of the Opal Service plugin are affected.
💻 Affected Systems
- Opal Service 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 users to malicious sites.
Likely Case
Attackers inject malicious scripts that steal user session data or display unwanted content to visitors.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users.
🎯 Exploit Status
Exploitation requires finding injection points and crafting malicious payloads that bypass any existing filters. The stored nature means payloads persist until removed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.9.1
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Opal Service' plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and remove plugin, then install latest version from WordPress repository.
🔧 Temporary Workarounds
Input Sanitization Filter
WordPressAdd custom input sanitization for Opal Service plugin fields using WordPress hooks
Add to theme's functions.php or custom plugin: add_filter('opal_service_input', 'wp_kses_post');
🧯 If You Can't Patch
- Disable or remove the Opal Service plugin entirely
- Implement web application firewall (WAF) rules to block XSS payloads targeting Opal Service endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for Opal Service version. If version is 1.9.1 or earlier, you are vulnerable.Check Version:
wp plugin list --name=opal-service --field=versionVerify Fix Applied:
After updating, verify Opal Service version is higher than 1.9.1. Test input fields that previously accepted script tags to ensure they're now sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to Opal Service endpoints containing script tags or JavaScript code
- Multiple failed sanitization attempts in WordPress debug logs
Network Indicators:
- HTTP requests with suspicious parameters like <script>, javascript:, or encoded payloads to plugin-specific URLs
SIEM Query:
source="wordpress" AND (uri_path="/wp-admin/admin-ajax.php" OR uri_path CONTAINS "opal-service") AND (http_params CONTAINS "<script>" OR http_params CONTAINS "javascript:")