CVE-2025-26873
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary code via PHP object injection in the Traveler WordPress theme. It affects WordPress sites using Traveler theme versions before 3.2.1. Attackers can exploit this without authentication to gain control of affected websites.
💻 Affected Systems
- WordPress Traveler 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
Complete server compromise leading to data theft, ransomware deployment, or website defacement. Attackers could gain administrative access to WordPress and potentially the underlying server.
Likely Case
Website takeover with ability to modify content, install backdoors, steal user data, and use the site for further attacks like phishing or malware distribution.
If Mitigated
Limited impact if proper input validation and output encoding are implemented elsewhere, but still significant risk of privilege escalation.
🎯 Exploit Status
Public exploit details available on Patchstack. Deserialization vulnerabilities are commonly weaponized in WordPress ecosystems.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.2.1
Vendor Advisory: https://patchstack.com/database/wordpress/theme/traveler/vulnerability/wordpress-traveler-theme-3-1-8-php-object-injection-vulnerability?_s_id=cve
Restart Required: No
Instructions:
1. Log into WordPress admin panel. 2. Navigate to Appearance > Themes. 3. Find Traveler theme and click 'Update Now' if available. 4. If manual update needed, download version 3.2.1 from official sources. 5. Upload via FTP or WordPress uploader, replacing existing files.
🔧 Temporary Workarounds
Disable Traveler Theme
allTemporarily switch to default WordPress theme until patched
Web Application Firewall Rule
allBlock deserialization attempts at WAF level
Add rule to block requests containing serialized PHP objects in POST/PUT data
🧯 If You Can't Patch
- Implement strict input validation and sanitization for all user inputs
- Deploy web application firewall with rules specifically blocking PHP object injection patterns
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Appearance > Themes. If Traveler theme version is below 3.2.1, system is vulnerable.Check Version:
Check WordPress admin panel or examine style.css in theme directory for Version: headerVerify Fix Applied:
Confirm Traveler theme version shows 3.2.1 or higher in WordPress admin. Test with security scanner for deserialization vulnerabilities.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to theme files
- PHP errors related to unserialize()
- Unexpected file uploads or modifications
Network Indicators:
- HTTP requests containing serialized PHP objects (O:8:"stdClass" patterns)
- Traffic to unfamiliar domains from WordPress server
SIEM Query:
source="wordpress.log" AND ("unserialize" OR "O:8:" OR "php_object_injection")