CVE-2026-62015 in Gamezone Plugin
Summary
by MITRE • 10/29/2026
Unauthenticated PHP Object Injection in Gamezone <= 1.1.11 versions.
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Analysis
by VulDB Data Team • 10/29/2026
The vulnerability identified as an unauthenticated PHP object injection flaw within Gamezone versions up to and including 1.1.11 represents a critical security deficiency that allows attackers to execute arbitrary code on the target server without requiring valid credentials or prior authentication. This type of vulnerability stems from the improper handling of user-supplied input during the deserialization process, where data is converted back into PHP objects. In many modern web applications, including those built with frameworks like WordPress which Gamezone likely utilizes as a plugin, serialization is often used to store complex state information in cookies or database fields for later retrieval and reconstruction by the application logic. When this unserialization occurs on input that has not been sufficiently validated or sanitized, an attacker can manipulate the serialized data stream to inject malicious object instances rather than benign ones.
The technical mechanism behind PHP Object Injection relies heavily on the existence of magic methods within classes loaded into memory during execution. These special methods, such as __wakeup(), __destruct(), and __toString(), are automatically invoked when objects are created or destroyed. If an attacker can control the properties passed to these methods through a crafted serialized string, they may trigger unintended side effects. For instance, if there is a class with a magic method that interacts with file systems, databases, or executes system commands, injecting a malicious object into this flow allows for remote code execution. The absence of authentication requirements significantly amplifies the severity of this flaw, as it lowers the barrier to entry for exploitation considerably. Any internet user accessing the vulnerable endpoint can attempt to exploit this condition without needing to bypass login screens or steal session tokens first.
From an operational perspective, successful exploitation of this vulnerability typically results in full compromise of the underlying web server environment. Attackers may achieve remote code execution by leveraging common PHP functions such as eval(), system(), exec(), or passthru() if they are accessible through chained method calls within existing classes known as gadgets. This can lead to a complete takeover of the website, allowing for defacement, data exfiltration, and further lateral movement into internal networks. Additionally, attackers might use this access to install web shells, create backdoors, or mine cryptocurrencies using server resources. The impact extends beyond immediate system compromise, potentially leading to severe reputational damage and loss of customer trust if sensitive user data is exposed during the exploitation process.
This vulnerability aligns with Common Weakness Enumeration identifier CWE-502, which describes Deserialization of Untrusted Data. It also maps closely to MITRE ATT&CK technique T1059, specifically Command and Scripting Interpreter subtechniques like PHP (T1059.007), as the ultimate goal is often to execute arbitrary commands on the host system. The lack of input validation before deserialization constitutes a fundamental failure in secure coding practices, highlighting the necessity for strict type checking and whitelisting allowed classes during unserialization processes.
To mitigate this risk, immediate action must be taken by upgrading Gamezone to version 1.1.12 or any later release where the vulnerability has been patched. Developers should avoid using PHP's native unserialize function on user-controlled input entirely. Instead, they should utilize safer alternatives such as JSON encoding and decoding for data exchange between client and server sides. If object serialization is absolutely necessary within trusted internal contexts, developers must implement strict class whitelisting to ensure that only expected classes can be instantiated during deserialization. Furthermore, enabling error reporting in development environments and conducting regular code audits focused on input validation and output encoding will help prevent similar vulnerabilities from being introduced into the application logic in the future.