CVE-2024-51656
📋 TL;DR
A Cross-Site Request Forgery (CSRF) vulnerability in the WordPress Flash Show And Hide Box plugin allows attackers to perform stored cross-site scripting (XSS) attacks. When exploited, this lets attackers inject malicious scripts that execute in victims' browsers. WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- WordPress Flash Show And Hide Box plugin
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Attackers could inject persistent malicious scripts that steal session cookies, redirect users to phishing sites, or perform actions as authenticated users, potentially compromising the entire WordPress site.
Likely Case
Attackers create malicious posts/pages containing JavaScript that executes when users visit them, leading to session hijacking, defacement, or credential theft.
If Mitigated
With proper CSRF protections and content security policies, the attack surface is reduced, though the vulnerability still exists in the codebase.
🎯 Exploit Status
Exploitation requires tricking authenticated users into visiting malicious pages, but the technical complexity is low once the attack vector is understood.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.7 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Flash Show And Hide Box' and check if update is available. 4. Click 'Update Now' to update to version 1.7 or later. 5. Verify the plugin is active and functioning correctly.
🔧 Temporary Workarounds
Disable Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate flash-show-and-hide-box
Implement CSRF Tokens
allAdd CSRF protection to WordPress forms if custom modifications are possible
🧯 If You Can't Patch
- Disable the Flash Show And Hide Box plugin immediately
- Implement web application firewall (WAF) rules to block CSRF and XSS patterns
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins for 'Flash Show And Hide Box' version. If version is 1.6 or earlier, you are vulnerable.Check Version:
wp plugin get flash-show-and-hide-box --field=versionVerify Fix Applied:
After updating, verify the plugin version shows 1.7 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WordPress admin-ajax.php or admin-post.php involving flash-show-and-hide-box
- JavaScript injection in post/page content
Network Indicators:
- CSRF attacks typically don't leave distinct network patterns beyond normal web traffic
SIEM Query:
source="wordpress.log" AND ("flash-show-and-hide-box" OR "admin-ajax.php") AND (POST OR "wp_nonce")