CVE-2024-9703
📋 TL;DR
The Arconix Shortcodes WordPress plugin has a stored XSS vulnerability in its 'button' shortcode that allows authenticated attackers with contributor-level access or higher to inject malicious scripts. These scripts execute whenever users view compromised pages, potentially affecting all visitors to vulnerable WordPress sites.
💻 Affected Systems
- Arconix Shortcodes WordPress Plugin
📦 What is this software?
Arconix Shortcodes by Tychesoftwares
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal session cookies, redirect users to malicious sites, deface websites, or perform actions on behalf of authenticated users, potentially leading to complete site compromise.
Likely Case
Attackers with contributor access inject malicious scripts that steal user session cookies or redirect visitors to phishing sites, compromising user accounts and site integrity.
If Mitigated
With proper user role management and content review processes, only trusted users can create content, significantly reducing attack surface.
🎯 Exploit Status
Exploitation requires authenticated access but is technically simple once attacker has contributor-level credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.1.13
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find Arconix Shortcodes and click 'Update Now'. 4. Verify version shows 2.1.13 or higher.
🔧 Temporary Workarounds
Disable vulnerable shortcode
allRemove or disable the 'button' shortcode functionality
Add to theme's functions.php: remove_shortcode('button');
Restrict user roles
allLimit contributor-level access to trusted users only
🧯 If You Can't Patch
- Implement strict content review process for all posts/pages created by contributors
- Deploy web application firewall with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins → Arconix Shortcodes version. If version is 2.1.12 or lower, you are vulnerable.Check Version:
wp plugin list --name=arconix-shortcodes --field=versionVerify Fix Applied:
After updating, verify plugin version shows 2.1.13 or higher in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress admin-ajax.php with button shortcode parameters
- Multiple failed login attempts followed by successful contributor login
Network Indicators:
- Inbound traffic from unusual locations to WordPress admin interface
- Outbound connections to suspicious domains after page views
SIEM Query:
source="wordpress.log" AND ("button" AND ("onclick" OR "javascript:" OR "<script>"))