CVE-2026-105064 in Unlimited Elements Plugin
Summary
by MITRE • 10/05/2026
Use of Externally-Controlled Input to Select Classes or Code ('Unsafe Reflection') vulnerability in Unlimited Elements Unlimited Elements For Elementor (Free Widgets, Addons, Templates) unlimited-elements-for-elementor allows Parameter Injection.This issue affects Unlimited Elements For Elementor (Free Widgets, Addons, Templates): from n/a through 2.0.22.
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Analysis
by VulDB Data Team • 10/05/2026
The vulnerability identified as an unsafe reflection or parameter injection flaw within the Unlimited Elements plugin for WordPress represents a critical security risk that stems directly from improper validation of user-supplied data before its use in dynamic code execution contexts. This specific class of vulnerabilities, commonly categorized under CWE-470 (Use of Externally-Controlled Input to Select Classes or Code), occurs when an application accepts input from external sources and uses it to determine which method, function, or object instantiation should be performed without adequate sanitization or allow-listing mechanisms. In the context of this WordPress plugin, attackers can manipulate specific parameters passed through HTTP requests to influence internal logic paths that rely on reflection APIs or dynamic evaluation functions. By crafting malicious payloads, a remote attacker can inject arbitrary code fragments into these execution flows, effectively bypassing standard security controls and gaining unauthorized access to sensitive system resources.
The technical mechanism behind this flaw involves the plugin's handling of user inputs related to widget configurations, template data, or addon settings. When the application processes these inputs, it fails to sufficiently verify that the provided values correspond only to expected, safe operations. Instead, the software dynamically resolves class names or function calls based on the untrusted input. This lack of strict type checking and validation allows an attacker to supply a maliciously crafted string that references internal classes or functions not intended for public access. Through this vector, the vulnerability enables Remote Code Execution (RCE), allowing the adversary to execute arbitrary commands with the privileges of the web server process. This is particularly dangerous in shared hosting environments where such execution can lead to lateral movement across other sites hosted on the same infrastructure.
From an operational perspective, the impact of this vulnerability is severe and multifaceted. Successful exploitation allows attackers to compromise the integrity, confidentiality, and availability of the affected WordPress installation. Once code execution is achieved, threat actors typically proceed with deploying web shells for persistent access, exfiltrating sensitive database contents including user credentials and personal data, or installing additional malware such as ransomware or cryptominers. The vulnerability affects versions from n/a through 2.0.22 of the Unlimited Elements plugin, meaning a vast number of installations remain exposed if they have not been updated to a patched version. This broad scope increases the attack surface significantly, making it a prime target for automated scanning tools and opportunistic attackers seeking low-hanging fruit in the WordPress ecosystem.
This vulnerability aligns with several entries in established security taxonomies that help categorize its nature and potential exploitation paths. It is directly associated with CWE-470 regarding unsafe reflection and CWE-94, which covers code injection vulnerabilities where untrusted data controls program flow. In terms of offensive tactics, this flaw facilitates the ATT&CK technique T1190 (Exploit Public-Facing Application), as it leverages a publicly accessible web application to gain initial access. Furthermore, if exploited for persistent backdoor installation, it may also relate to T1505 (Server Software Component) or T1059 (Command and Scripting Interpreter). Understanding these mappings is crucial for security teams prioritizing remediation efforts based on industry-standard risk assessments rather than relying solely on vendor advisories.
Mitigation strategies must focus on immediate patching and rigorous input validation practices. The primary defense is to update the Unlimited Elements plugin to a version released after 2.0.22, where developers have presumably implemented stricter input sanitization and allow-listing for dynamic code execution features. For organizations unable to immediately apply patches due to compatibility concerns with other plugins or themes, temporary mitigation involves disabling the specific widget types or addon modules that expose these vulnerable endpoints via HTTP parameters. Additionally, implementing a Web Application Firewall (WAF) can provide an additional layer of defense by detecting and blocking requests containing patterns indicative of reflection-based injection attacks. Regular security audits focusing on how third-party extensions handle user input are essential to prevent similar vulnerabilities in the future, ensuring that all dynamic code execution features adhere to secure coding standards such as those outlined in OWASP guidelines for preventing server-side request forgery and command injection.