CVE-2025-67541
📋 TL;DR
This stored Cross-Site Scripting (XSS) vulnerability in the WP-ShowHide WordPress plugin allows attackers to inject malicious scripts into web pages that are then executed when other users view those pages. All WordPress sites using WP-ShowHide version 1.05 or earlier are affected. The vulnerability enables attackers to steal session cookies, redirect users, or perform actions on behalf of authenticated users.
💻 Affected Systems
- WP-ShowHide WordPress 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 steal administrator session cookies, take over the WordPress site, install backdoors, deface the site, or use it as a platform for further attacks against visitors.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies or credentials, redirect users to phishing sites, or perform actions as authenticated users.
If Mitigated
With proper input validation and output encoding, the malicious scripts would be rendered harmless as text rather than executable code.
🎯 Exploit Status
The vulnerability is stored XSS, meaning injected scripts persist in the database and affect multiple users. Exploitation requires the ability to submit input to vulnerable fields.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.06 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find WP-ShowHide and click 'Update Now' if available. 4. If no update is available, deactivate and delete the plugin, then install the latest version from WordPress repository.
🔧 Temporary Workarounds
Disable WP-ShowHide Plugin
allTemporarily disable the vulnerable plugin until patched version is available
wp plugin deactivate wp-showhide
Implement Content Security Policy
allAdd CSP headers to mitigate XSS impact by restricting script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Or add to WordPress functions.php: header("Content-Security-Policy: default-src 'self'; script-src 'self'");
🧯 If You Can't Patch
- Disable the WP-ShowHide plugin immediately
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Installed Plugins for WP-ShowHide version 1.05 or earlierCheck Version:
wp plugin list --name=wp-showhide --field=versionVerify Fix Applied:
Verify WP-ShowHide plugin version is 1.06 or later in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to WP-ShowHide endpoints containing script tags or JavaScript
- Multiple failed login attempts following suspicious plugin activity
Network Indicators:
- HTTP requests containing malicious script payloads in parameters
- Unexpected outbound connections from WordPress site to external domains
SIEM Query:
source="wordpress.log" AND ("wp-showhide" OR "showhide") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")