CVE-2025-26937
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the WordPress Icon List Block plugin allows attackers to inject malicious scripts into web pages. When users view pages containing the compromised icon lists, their browsers execute the attacker's code. All WordPress sites using vulnerable versions of this plugin are affected.
💻 Affected Systems
- WordPress Icon List Block 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 WordPress sites, deface websites, redirect visitors to malicious sites, or install backdoors for persistent access.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, potentially compromising administrator accounts and gaining control over the WordPress site.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users' browsers, preventing exploitation.
🎯 Exploit Status
Stored XSS vulnerabilities in WordPress plugins are frequently exploited in the wild. Attackers typically need contributor-level access or higher to inject malicious scripts.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.1.4 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins → Installed Plugins. 3. Find 'Icon List Block' plugin. 4. Click 'Update Now' if update is available. 5. Alternatively, download version 1.1.4+ from WordPress repository and manually update.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily deactivate the Icon List Block plugin until patched
wp plugin deactivate icon-list-block
Implement Content Security Policy
allAdd CSP headers to restrict script execution sources
Add to .htaccess: Header set Content-Security-Policy "default-src 'self'; script-src 'self'"
Or add to WordPress functions.php
🧯 If You Can't Patch
- Remove or disable the Icon List Block plugin entirely
- Implement web application firewall (WAF) rules to block XSS payloads
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin → Plugins → Installed Plugins → Icon List Block version. If version is 1.1.3 or lower, you are vulnerable.Check Version:
wp plugin get icon-list-block --field=versionVerify Fix Applied:
After updating, verify plugin version shows 1.1.4 or higher in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin/admin-ajax.php with script tags
- Multiple failed login attempts followed by successful contributor/admin login
- Unexpected modifications to posts/pages containing icon lists
Network Indicators:
- Outbound connections to suspicious domains from your WordPress server
- Unusual JavaScript payloads in HTTP requests
SIEM Query:
source="wordpress.log" AND ("icon-list" OR "icon_list") AND ("script" OR "javascript" OR "onclick" OR "onload")