CVE-2025-58703
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Skyword API WordPress plugin allows attackers to inject malicious scripts that execute in users' browsers when viewing affected pages. WordPress sites using vulnerable versions of the Skyword API plugin are affected, potentially compromising user sessions and site integrity.
💻 Affected Systems
- Skyword API 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 credentials, deface websites, redirect users to malicious sites, or install backdoors for persistent access.
Likely Case
Session hijacking, cookie theft, or defacement of vulnerable pages through stored malicious scripts.
If Mitigated
Limited impact with proper input validation, output encoding, and Content Security Policy (CSP) headers in place.
🎯 Exploit Status
Stored XSS typically requires some level of access to input fields, but exact authentication requirements are unspecified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 2.5.3
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Skyword API plugin. 4. Click 'Update Now' if available, or manually update to latest version. 5. Verify plugin version is above 2.5.3.
🔧 Temporary Workarounds
Disable Plugin
WordPressTemporarily deactivate the vulnerable plugin until patched.
wp plugin deactivate skyword-plugin
Implement Content Security Policy
allAdd CSP headers to mitigate XSS impact by restricting script execution sources.
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Or add to wp-config.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads.
- Restrict plugin access to trusted users only and monitor for suspicious input.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Skyword API version 2.5.3 or lower.Check Version:
wp plugin get skyword-plugin --field=versionVerify Fix Applied:
Confirm plugin version is above 2.5.3 in WordPress admin or via command: wp plugin get skyword-plugin --field=version📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints with script tags or JavaScript payloads
- Multiple failed login attempts followed by plugin-related activity
Network Indicators:
- HTTP requests containing <script> tags or JavaScript in parameters
- Unexpected outbound connections from user browsers after visiting plugin pages
SIEM Query:
source="wordpress.log" AND ("skyword" OR "skyword-plugin") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")