CVE-2025-49390
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the WordPress Cookie Notice & Consent plugin allows attackers to inject malicious scripts that execute when users view affected pages. The vulnerability affects all WordPress sites using vulnerable versions of this plugin. Attackers can steal session cookies, redirect users, or perform actions on their behalf.
💻 Affected Systems
- WordPress Cookie Notice & Consent 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, install backdoors, deface websites, or redirect visitors to malicious sites.
Likely Case
Attackers inject malicious JavaScript to steal user session cookies, potentially compromising user accounts and performing unauthorized actions.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before execution, preventing exploitation.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly weaponized. While no public PoC is confirmed, exploitation is straightforward for attackers with basic web security knowledge.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.6.5 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Plugins > Installed Plugins. 3. Find 'Cookie Notice & Consent' and click 'Update Now'. 4. Verify update to version 1.6.5 or later.
🔧 Temporary Workarounds
Disable vulnerable plugin
allTemporarily disable the Cookie Notice & Consent plugin until patched
wp plugin deactivate cookie-notice-consent
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'"
Add to nginx config: add_header Content-Security-Policy "default-src 'self'; script-src 'self'";
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block XSS payloads
- Restrict plugin access to trusted administrators only
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin > Plugins > Installed Plugins for Cookie Notice & Consent versionCheck Version:
wp plugin list --name=cookie-notice-consent --field=versionVerify Fix Applied:
Verify plugin version is 1.6.5 or higher in WordPress admin panel📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to plugin endpoints
- Suspicious JavaScript in cookie-related parameters
- Multiple failed XSS attempts
Network Indicators:
- Malicious script tags in HTTP requests
- Suspicious cookie manipulation patterns
SIEM Query:
source="wordpress.log" AND ("cookie-notice-consent" OR "cookie_notice") AND ("script" OR "javascript" OR "onerror" OR "onload")