CVE-2025-11806
📋 TL;DR
The Qzzr Shortcode WordPress plugin has a stored XSS vulnerability that allows authenticated attackers with contributor-level access or higher to inject malicious scripts into website pages. These scripts execute whenever users visit the compromised pages, potentially stealing credentials or performing unauthorized actions. All WordPress sites using this plugin up to version 1.0.1 are affected.
💻 Affected Systems
- Qzzr Shortcode 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
Attackers with contributor access inject malicious scripts to steal user session cookies or credentials, potentially compromising user accounts.
If Mitigated
With proper user access controls and content review processes, exploitation would be limited to authorized users only.
🎯 Exploit Status
Exploitation requires authenticated access with at least contributor privileges. The vulnerability is in the 'quiz' attribute of the 'qzzr' shortcode.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.0.1
Vendor Advisory: https://wordpress.org/plugins/qzzr-shortcode/
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Qzzr Shortcode' plugin. 4. Click 'Update Now' if update available. 5. If no update available, deactivate and delete the plugin immediately.
🔧 Temporary Workarounds
Remove Contributor Access
allTemporarily remove contributor-level access for untrusted users until patching is complete.
Disable Plugin
allDeactivate the Qzzr Shortcode plugin to prevent exploitation.
🧯 If You Can't Patch
- Immediately deactivate and remove the Qzzr Shortcode plugin from your WordPress installation.
- Implement strict content review processes for all posts and pages created by contributors.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel → Plugins → Installed Plugins. If Qzzr Shortcode version is 1.0.1 or lower, you are vulnerable.Check Version:
wp plugin list --name=qzzr-shortcode --field=versionVerify Fix Applied:
After updating, verify the plugin version is higher than 1.0.1 in the WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual post/page edits by contributors
- Suspicious shortcode modifications containing script tags
Network Indicators:
- Unexpected JavaScript execution from WordPress pages
- External script loading from posts/pages
SIEM Query:
source="wordpress" AND (event="post_modified" OR event="page_modified") AND user_role="contributor" AND content CONTAINS "[qzzr"