CVE-2026-67960 in PbootCMS
Summary
by MITRE • 08/18/2026
An issue in PbootCMS v.3.2.15 allows an attacker to execute arbitrary code via the MemberController.php, UserController.php, CommentController.php, ContentController.php, and helper.php components
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Analysis
by VulDB Data Team • 08/18/2026
The vulnerability identified in PbootCMS version 3.2.15 represents a critical security flaw rooted in insufficient input validation within several core controller classes and utility functions. Specifically, the affected components include MemberController.php, UserController.php, CommentController.php, ContentController.php, and helper.php. These modules are responsible for handling user interactions, content management, and system-level helper operations. The fundamental technical issue lies in the failure to properly sanitize or validate data inputs before they are processed by internal logic functions. This lack of rigorous validation allows an attacker to inject malicious payloads that bypass expected execution boundaries, leading directly to arbitrary code execution on the target server.
From a technical perspective, this flaw is characteristic of improper neutralization of special elements used in an OS command, often categorized under CWE-78: Improper Neutralization of Special Elements used in an Operating System Command (OS Command Injection). In many web application frameworks like PbootCMS, controllers act as intermediaries between user requests and backend services. When these components accept parameters such as file paths, database queries, or system commands without adequate filtering, they create a vector for injection attacks. The presence of this vulnerability across multiple distinct files suggests a systemic architectural weakness where input handling practices are not consistently enforced throughout the application's codebase. This allows an attacker to manipulate variables that influence command execution contexts, potentially leveraging shell metacharacters or other scripting elements to execute arbitrary system commands with the privileges of the web server process.
The operational impact of this vulnerability is severe and far-reaching. Successful exploitation enables a remote unauthenticated attacker to achieve full control over the underlying operating system hosting the PbootCMS instance. This level of access allows for the exfiltration of sensitive data, including user credentials, database contents, and proprietary business information stored within the CMS. Furthermore, an attacker can use this foothold to pivot into other parts of the network, install backdoors, deploy ransomware, or disrupt service availability by modifying critical system files. The breadth of affected components means that multiple entry points exist for exploitation, increasing the likelihood of a successful attack against systems running this specific version without immediate patches applied.
Mitigation strategies must focus on both immediate remediation and long-term security hardening. The primary action is to upgrade PbootCMS to the latest stable version where these input validation flaws have been addressed by the development team. If upgrading is not immediately feasible, administrators should implement strict web application firewall rules that detect and block common OS command injection patterns in HTTP request parameters. Additionally, code-level remediation requires reviewing all instances of user-supplied data passed to system functions or database queries within the affected controllers and helper files. Implementing parameterized queries for database operations and using whitelisting approaches for any dynamic file path construction can significantly reduce the attack surface. Regular security audits and static application security testing should be integrated into the development lifecycle to prevent similar vulnerabilities from being introduced in future releases, aligning with industry best practices such as those outlined in OWASP Top 10 regarding injection flaws.