CVE-2024-56297
📋 TL;DR
This stored cross-site scripting (XSS) vulnerability in the Highlight WordPress plugin allows attackers to inject malicious scripts into web pages that persist and execute when other users view the affected content. The vulnerability affects all versions up to 2.0.2 of the Highlight plugin. WordPress sites using this vulnerable plugin are at risk.
💻 Affected Systems
- Highlight 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, perform actions as authenticated users, deface websites, or redirect users to malicious sites, potentially leading to complete site compromise.
Likely Case
Attackers inject malicious JavaScript that steals user session cookies or credentials when users visit pages containing the malicious payload.
If Mitigated
With proper input validation and output encoding, malicious scripts would be neutralized before reaching users, preventing execution.
🎯 Exploit Status
Stored XSS vulnerabilities are commonly exploited and weaponization is likely given the public disclosure.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.3 or later
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins > Installed Plugins
3. Find Highlight plugin
4. Click 'Update Now' if update is available
5. Alternatively, download version 2.0.3+ from WordPress repository and manually update
🔧 Temporary Workarounds
Disable Highlight Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate highlight
Implement WAF Rules
allAdd web application firewall rules to block XSS payloads targeting Highlight plugin
🧯 If You Can't Patch
- Remove the Highlight plugin entirely if patching is not possible
- Implement strict Content Security Policy (CSP) headers to mitigate XSS impact
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Highlight plugin version. If version is 2.0.2 or earlier, you are vulnerable.Check Version:
wp plugin get highlight --field=versionVerify Fix Applied:
After updating, verify Highlight plugin version shows 2.0.3 or later in WordPress admin panel.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to Highlight plugin endpoints
- JavaScript payloads in request parameters
- Multiple failed XSS attempts
Network Indicators:
- HTTP requests containing script tags or JavaScript in Highlight-related parameters
- Unusual outbound connections after visiting Highlight content
SIEM Query:
source="wordpress.log" AND ("highlight" OR "wp-content/plugins/highlight") AND ("<script>" OR "javascript:" OR "onerror=" OR "onload=")