CVE-2026-93935 in Let's Play Plugin
Summary
by MITRE • 10/10/2026
Deserialization of Untrusted Data vulnerability in ThemeREX Group Let's Play playhockey allows Object Injection.This issue affects Let's Play: from n/a through 1.1.15.
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Analysis
by VulDB Data Team • 10/10/2026
The vulnerability identified as a deserialization of untrusted data flaw within the ThemeREX Group Let's Play plugin, specifically affecting versions up to and including 1.1.15, represents a critical security risk rooted in improper handling of serialized objects during input processing. This type of vulnerability occurs when an application accepts user-supplied or externally sourced data that is then deserialized without adequate validation or sanitization mechanisms. In the context of PHP-based WordPress plugins like Let's Play, this often involves functions such as unserialize() being invoked on parameters derived from HTTP requests, cookies, or other input vectors where attacker control can be exerted. The core technical flaw lies in the assumption that incoming data is safe for immediate interpretation by the application runtime environment, thereby allowing an adversary to craft malicious serialized payloads designed to instantiate arbitrary PHP objects with side effects.
From a technical perspective, object injection vulnerabilities exploit the way modern programming languages handle serialization and deserialization processes. When untrusted data is passed directly into a deserialization function, it can trigger magic methods such as __wakeup(), __destruct(), or __toString() within instantiated classes if those classes are available in the application's autoloaded scope. An attacker who successfully exploits this flaw can manipulate these internal object states to perform unintended actions, potentially leading to remote code execution (RCE), privilege escalation, or arbitrary file reads and writes depending on which vulnerable classes are present in the WordPress environment. This is particularly dangerous because it bypasses traditional input validation checks that focus solely on string content rather than structural integrity of serialized data structures.
The operational impact of this vulnerability is severe, as it effectively grants an attacker full control over the server-side execution context if they can trigger the vulnerable deserialization endpoint. Depending on the hosting environment and WordPress configuration, successful exploitation could lead to complete site compromise, including defacement, installation of web shells for persistent access, theft of sensitive database contents containing user credentials or personal information, and use of the compromised server as a pivot point for further attacks against internal networks. For sites running e-commerce features via WooCommerce integration often associated with sports management plugins like Let's Play, financial data exposure becomes an additional critical concern alongside general site integrity loss.
This vulnerability aligns closely with Common Weakness Enumeration (CWE) category CWE-502, which specifically addresses Deserialization of Untrusted Data. It also maps to MITRE ATT&CK techniques related to Command and Scripting Interpreter execution via injection or exploitation of binary resources, particularly under tactics involving Initial Access and Execution phases where attackers leverage application logic flaws rather than network-level exploits. The lack of strict type checking or allow-listing of expected object types during deserialization is the primary indicator of this weakness in code audits.
Mitigation strategies must prioritize immediate remediation through software updates. Administrators should upgrade the Let's Play plugin to version 1.1.16 or later, where ThemeREX Group has presumably implemented proper input validation and safe serialization practices such as using json_decode instead of unserialize for data exchange, or implementing strict class whitelisting during deserialization processes. For environments unable to update immediately due to compatibility constraints, temporary mitigations include restricting file upload permissions, disabling PHP execution in specific directories if possible via web server configuration like .htaccess rules, and employing Web Application Firewalls (WAF) with signatures capable of detecting anomalous serialized payload patterns containing known dangerous class names or magic method invocations. Regular security audits focusing on input handling routines are essential to prevent recurrence of similar deserialization flaws across the WordPress ecosystem.