CVE-2024-29790
📋 TL;DR
This vulnerability allows attackers to inject malicious scripts into web pages generated by the Squirrly SEO WordPress plugin. When a user visits a specially crafted URL, the script executes in their browser, potentially stealing cookies, session tokens, or performing actions on their behalf. All WordPress sites using vulnerable versions of the Squirrly SEO plugin are affected.
💻 Affected Systems
- Squirrly SEO WordPress Plugin
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers could steal administrator session cookies, take over WordPress sites, deface websites, or redirect users to malicious sites, leading to complete compromise of affected WordPress installations.
Likely Case
Attackers steal user session cookies or credentials, perform actions as authenticated users, or redirect users to phishing pages, potentially compromising user accounts and data.
If Mitigated
With proper input validation and output encoding, malicious scripts are neutralized before reaching users, preventing any exploitation while maintaining plugin functionality.
🎯 Exploit Status
Reflected XSS vulnerabilities are commonly exploited and require minimal technical skill. Attackers can craft malicious URLs and trick users into clicking them.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 12.3.17 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find Squirrly SEO plugin. 4. Click 'Update Now' if available. 5. Alternatively, download latest version from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable Squirrly SEO Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate squirrly-seo
Implement WAF Rules
allAdd web application firewall rules to block XSS payloads targeting Squirrly SEO endpoints
🧯 If You Can't Patch
- Implement Content Security Policy (CSP) headers to restrict script execution
- Use browser security extensions or plugins that block XSS attacks
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for Squirrly SEO versionCheck Version:
wp plugin get squirrly-seo --field=versionVerify Fix Applied:
Verify plugin version is 12.3.17 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual GET/POST requests containing script tags or JavaScript code to Squirrly SEO endpoints
- Multiple failed XSS attempts in web server logs
Network Indicators:
- HTTP requests with suspicious parameters containing <script>, javascript:, or encoded payloads
SIEM Query:
source="web_server_logs" AND (uri="*squirrly*" AND (param="*<script>*" OR param="*javascript:*" OR param="*%3Cscript%3E*"))🔗 References
- https://patchstack.com/database/vulnerability/squirrly-seo/wordpress-squirrly-seo-plugin-12-3-16-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
- https://patchstack.com/database/vulnerability/squirrly-seo/wordpress-squirrly-seo-plugin-12-3-16-reflected-cross-site-scripting-xss-vulnerability?_s_id=cve
