CVE-2024-7590
📋 TL;DR
This stored XSS vulnerability in the Spectra WordPress plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. It affects all WordPress sites using Spectra versions up to 2.14.1. Attackers can steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- Spectra (Ultimate Addons for Gutenberg)
📦 What is this software?
Spectra by Brainstormforce
⚠️ Risk & Real-World Impact
Worst Case
Attackers gain administrative access to WordPress sites, deface websites, steal sensitive user data, or install backdoors for persistent access.
Likely Case
Attackers hijack user sessions, redirect visitors to malicious sites, or steal authentication cookies from logged-in users.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users.
🎯 Exploit Status
Exploitation requires contributor-level access or higher. XSS payloads can be stored in plugin-generated content.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.14.2 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Spectra' and click 'Update Now'. 4. Verify version is 2.14.2 or higher.
🔧 Temporary Workarounds
Disable Spectra Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate ultimate-addons-for-gutenberg
Implement Content Security Policy
allAdd CSP headers to restrict 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
- Restrict user roles that can create/edit content to trusted administrators only
- Implement web application firewall (WAF) rules to block XSS payload patterns
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for Spectra version. If version is 2.14.1 or lower, you are vulnerable.Check Version:
wp plugin get ultimate-addons-for-gutenberg --field=versionVerify Fix Applied:
After updating, verify Spectra version shows 2.14.2 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests containing script tags to Spectra endpoints
- Multiple failed login attempts followed by successful contributor/admin login
Network Indicators:
- Outbound connections to suspicious domains from your WordPress server
- Unexpected redirects from your site to external domains
SIEM Query:
source="wordpress.log" AND ("spectra" OR "ultimate-addons") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")