CVE-2025-48270
📋 TL;DR
This DOM-based Cross-Site Scripting (XSS) vulnerability in the SKT Blocks WordPress plugin allows attackers to inject malicious scripts into web pages viewed by other users. The vulnerability affects all WordPress sites using SKT Blocks versions up to 2.2. Attackers can steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- SKT Blocks WordPress Plugin
📦 What is this software?
Skt Blocks by Sktthemes
⚠️ 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 malicious sites, or perform limited actions within the compromised user's context.
If Mitigated
Limited impact with proper Content Security Policy (CSP) headers, input validation, and output encoding in place.
🎯 Exploit Status
DOM-based XSS typically requires user interaction but can be exploited via crafted links or forms.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.3 or later
Vendor Advisory: https://patchstack.com/database/wordpress/plugin/skt-blocks/vulnerability/wordpress-skt-blocks-2-2-cross-site-scripting-xss-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Go to Plugins → Installed Plugins. 3. Find SKT Blocks and click 'Update Now'. 4. Verify version is 2.3 or higher.
🔧 Temporary Workarounds
Disable SKT Blocks Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate skt-blocks
Implement Content Security Policy
allAdd CSP headers to restrict script execution
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
- Implement strict Content Security Policy headers to prevent script execution from untrusted sources
- Use web application firewall (WAF) rules to block XSS payloads in requests
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for SKT Blocks version 2.2 or earlierCheck Version:
wp plugin get skt-blocks --field=versionVerify Fix Applied:
Verify SKT Blocks version is 2.3 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST/GET requests with script tags or JavaScript payloads to WordPress endpoints
- Multiple failed login attempts followed by suspicious plugin-related requests
Network Indicators:
- HTTP requests containing <script>, javascript:, or eval() patterns
- Unusual outbound connections from WordPress server after plugin access
SIEM Query:
source="wordpress.log" AND ("skt-blocks" OR "wp-admin/admin-ajax.php") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")