CVE-2025-49358
📋 TL;DR
This DOM-based Cross-Site Scripting (XSS) vulnerability in the Content Fetcher WordPress plugin allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability affects all WordPress sites using Content Fetcher plugin versions up to 1.1. Attackers can steal session cookies, redirect users to malicious sites, or perform actions on behalf of authenticated users.
💻 Affected Systems
- WordPress Content Fetcher 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 steal administrator session cookies, gain full control of WordPress site, install backdoors, deface website, or steal sensitive user data.
Likely Case
Attackers steal user session cookies, redirect visitors to phishing pages, or perform limited actions based on victim's permissions.
If Mitigated
Attack limited to non-sensitive actions if proper Content Security Policy (CSP) headers are implemented and user sessions have short timeouts.
🎯 Exploit Status
XSS vulnerabilities are commonly weaponized. The Patchstack reference shows technical details that could be used to create exploits.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Go to Plugins → Installed Plugins. 3. Find Content Fetcher plugin. 4. Click 'Update Now' if update available. 5. If no update, deactivate and delete plugin, then install fresh version from WordPress repository.
🔧 Temporary Workarounds
Disable Content Fetcher Plugin
allTemporarily disable the vulnerable plugin until patched version is available.
wp plugin deactivate content-fetcher
Implement Content Security Policy
allAdd CSP headers to mitigate XSS attacks by restricting script execution sources.
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";
🧯 If You Can't Patch
- Disable Content Fetcher plugin immediately
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for Content Fetcher version. If version is 1.1 or earlier, you are vulnerable.Check Version:
wp plugin list --name=content-fetcher --field=versionVerify Fix Applied:
Verify Content Fetcher plugin version is 1.2 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST/GET requests with script tags or JavaScript payloads to Content Fetcher endpoints
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests containing <script>, javascript:, or eval() patterns
- Unexpected redirects from Content Fetcher pages
SIEM Query:
source="web_logs" AND (uri="*content-fetcher*" AND (message="*<script>*" OR message="*javascript:*" OR message="*eval(*"))