CVE-2025-49455
📋 TL;DR
CVE-2025-49455 is a PHP object injection vulnerability in the LoftOcean TinySalt WordPress theme that allows attackers to execute arbitrary code through deserialization of untrusted data. This affects all WordPress sites using TinySalt theme versions before 3.10.0. Successful exploitation could lead to complete site compromise.
💻 Affected Systems
- LoftOcean TinySalt 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
Remote code execution leading to complete server takeover, data theft, malware deployment, and persistent backdoor installation.
Likely Case
Website defacement, data exfiltration, privilege escalation, and installation of malicious plugins/themes.
If Mitigated
Limited impact with proper web application firewalls, restricted file permissions, and minimal user privileges.
🎯 Exploit Status
Deserialization vulnerabilities in WordPress themes are commonly exploited with publicly available tools and payloads.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.10.0
Vendor Advisory: https://patchstack.com/database/wordpress/theme/tinysalt/vulnerability/wordpress-tinysalt-3-10-0-php-object-injection-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Appearance > Themes. 3. Click on TinySalt theme. 4. Update to version 3.10.0 or later. 5. Clear any caching plugins/CDN caches.
🔧 Temporary Workarounds
Disable TinySalt Theme
allSwitch to a different WordPress theme until patched
wp theme activate twentytwentyfour
wp theme delete tinysalt
Web Application Firewall Rule
allBlock deserialization attempts at WAF level
Add rule to block requests containing serialized PHP object patterns
🧯 If You Can't Patch
- Implement strict file permissions (755 for directories, 644 for files)
- Deploy a web application firewall with PHP object injection protection rules
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Appearance > Themes for TinySalt version below 3.10.0Check Version:
wp theme list --name=tinysalt --field=versionVerify Fix Applied:
Confirm TinySalt theme version is 3.10.0 or higher in WordPress admin📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to theme files
- PHP unserialize() errors in logs
- Unexpected file uploads/modifications
Network Indicators:
- HTTP requests containing serialized PHP objects (O:8:, C:7: patterns)
- Traffic to unfamiliar admin-ajax.php endpoints
SIEM Query:
source="wordpress.log" AND ("unserialize" OR "O:8:" OR "C:7:")