CVE-2024-13787
📋 TL;DR
This vulnerability in the VEDA WordPress theme allows authenticated attackers with Subscriber-level access or higher to inject PHP objects through insecure deserialization. The impact depends on whether other plugins or themes with PHP object populator (POP) chains are installed. Without a POP chain, the vulnerability has no direct impact, but with one, attackers could delete files, access sensitive data, or execute code.
💻 Affected Systems
- VEDA - MultiPurpose WordPress Theme
⚠️ 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
If a POP chain is present via another plugin/theme, attackers could achieve remote code execution, file deletion, or data exfiltration, potentially compromising the entire WordPress site and server.
Likely Case
Most WordPress installations have multiple plugins/themes, increasing the chance of a compatible POP chain being present, leading to arbitrary file operations or data access.
If Mitigated
With proper access controls limiting Subscriber accounts and regular plugin/theme updates, the risk is reduced to minimal if no POP chains are present.
🎯 Exploit Status
Exploitation requires authenticated access (Subscriber or higher) and depends on finding compatible POP chains in other installed components.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version after 4.2
Vendor Advisory: https://themeforest.net/item/veda-multipurpose-theme/15860489
Restart Required: No
Instructions:
1. Update VEDA theme to latest version via WordPress admin panel. 2. Verify theme version is above 4.2. 3. Clear any caching plugins. 4. Test site functionality.
🔧 Temporary Workarounds
Remove vulnerable theme
allTemporarily switch to default WordPress theme until patch is applied
In WordPress admin: Appearance > Themes > Activate default theme (e.g., Twenty Twenty-Four)
Restrict user registration
allDisable new user registrations to prevent attacker account creation
In WordPress admin: Settings > General > Uncheck 'Anyone can register'
🧯 If You Can't Patch
- Implement strict access controls: Limit Subscriber accounts, review all user accounts, remove unnecessary ones.
- Audit installed plugins/themes: Remove any with known POP chains or unnecessary components to reduce attack surface.
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel: Appearance > Themes, verify VEDA theme version is 4.2 or lower.Check Version:
WordPress admin panel or check theme's style.css file for 'Version:' lineVerify Fix Applied:
After update, verify VEDA theme version is above 4.2 in Appearance > Themes.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to wp-admin/admin-ajax.php with 'veda_backup_and_restore_action' parameter
- PHP deserialization errors in web server logs
Network Indicators:
- HTTP requests with serialized PHP objects in parameters from authenticated sessions
SIEM Query:
source="web_logs" AND "veda_backup_and_restore_action" AND ("O:" OR "C:" OR "a:" in request_body)