CVE-2025-26890 in Husky Plugin
Summary
by MITRE • 03/28/2025
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in PluginUs.Net HUSKY allows PHP Local File Inclusion.This issue affects HUSKY: from n/a through 1.3.6.4.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 03/28/2025
The CVE-2025-26890 vulnerability represents a critical PHP Remote File Inclusion flaw within the PluginUs.Net HUSKY plugin, specifically impacting versions ranging from an unspecified initial version through 1.3.6.4. This vulnerability stems from improper control of filename parameters in include or require statements, creating a pathway for malicious actors to execute arbitrary code on affected systems. The flaw resides in how the plugin processes user-supplied input when constructing file inclusion paths, allowing attackers to manipulate these parameters and potentially load malicious files from remote servers or local system locations. Such vulnerabilities fall under the broader category of CWE-98, which specifically addresses Improper Control of Filename for Include/Require Statement, making them particularly dangerous in web applications where user input directly influences file operations. The ATT&CK framework categorizes this as a technique under T1505.003 - Server Software Component, as it exploits weaknesses in web application components to achieve remote code execution.
The technical exploitation of this vulnerability occurs when the plugin accepts user-controllable parameters that are then used in PHP include or require statements without proper sanitization or validation. Attackers can manipulate these parameters to point to malicious files hosted on remote servers or to local files on the target system that contain malicious code. This creates a direct pathway for remote code execution, allowing attackers to execute arbitrary commands on the server, potentially leading to full system compromise. The vulnerability is particularly concerning because it affects a widely used plugin, increasing the attack surface and potential impact. When a user interacts with the vulnerable plugin, the malicious code execution occurs server-side, making it difficult to detect through standard client-side monitoring mechanisms.
The operational impact of this vulnerability extends beyond simple code execution, potentially allowing attackers to gain persistent access to affected systems, steal sensitive data, or use compromised servers for further attacks. The vulnerability could enable attackers to establish backdoors, modify or delete critical system files, and access database contents. Organizations using affected versions of the HUSKY plugin face significant risk, as the vulnerability can be exploited through various attack vectors including web application penetration testing, social engineering, or automated scanning tools. The remote nature of the vulnerability means that attackers do not require physical access to the system and can exploit it from anywhere on the internet, making it particularly dangerous for web applications that are publicly accessible.
Mitigation strategies for CVE-2025-26890 should prioritize immediate patching of the affected plugin to version 1.3.6.5 or later, which contains the necessary fixes for the file inclusion vulnerability. Organizations should implement input validation and sanitization measures to prevent malicious filenames from being processed in include or require statements. The principle of least privilege should be enforced by configuring PHP to disable remote file inclusion using the allow_url_include directive set to off. Additionally, implementing proper web application firewalls and intrusion detection systems can help detect and block exploitation attempts. Security monitoring should include regular vulnerability scanning of web applications and plugins, with particular attention to outdated components. The remediation process should also involve reviewing and hardening the plugin's file inclusion mechanisms to ensure that only trusted and validated file paths are processed, aligning with industry best practices for secure coding and the recommendations outlined in the OWASP Top Ten for preventing remote file inclusion attacks.