CVE-2025-3276
📋 TL;DR
This stored XSS vulnerability in the SKT Blocks WordPress plugin allows authenticated attackers with Contributor access or higher to inject malicious scripts into web pages. The scripts execute automatically when users visit compromised pages, potentially stealing credentials or performing unauthorized actions. All WordPress sites using SKT Blocks plugin versions up to 1.9 are affected.
💻 Affected Systems
- SKT Blocks – Gutenberg based Page Builder WordPress plugin
📦 What is this software?
Skt Blocks by Sktthemes
⚠️ 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 accounts inject malicious scripts to steal user session cookies or credentials, potentially escalating privileges.
If Mitigated
With proper user access controls and content security policies, impact is limited to data leakage from users visiting compromised pages.
🎯 Exploit Status
Exploitation requires authenticated access but is straightforward once attacker has Contributor-level credentials.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 1.9
Vendor Advisory: https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3267889%40skt-blocks&new=3267889%40skt-blocks&sfp_email=&sfph_mail=
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find SKT Blocks plugin and click 'Update Now'. 4. Verify plugin version is greater than 1.9.
🔧 Temporary Workarounds
Disable Post Carousel Block
allTemporarily disable the vulnerable Post Carousel block component
Restrict Contributor Permissions
allRemove contributor ability to edit posts or temporarily downgrade contributor roles
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Install web application firewall with XSS protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins → SKT Blocks version numberCheck Version:
wp plugin list --name='skt-blocks' --field=versionVerify Fix Applied:
Verify SKT Blocks plugin version is greater than 1.9 in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual post/page edits by contributor users
- Suspicious script tags in post content
Network Indicators:
- Unexpected script loads from post carousel elements
SIEM Query:
source="wordpress" AND (event="post_modified" OR event="page_modified") AND user_role="contributor" AND content CONTAINS "<script>"