CVE-2026-79426 in CRMEB
Summary
by MITRE • 09/04/2026
An arbitrary file deletion vulnerability in the /adminapi/file/video_data_save component of CRMEB v6.0.0 allows authenticated attackers to delete arbitrary files via crafted POST request.
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Analysis
by VulDB Data Team • 09/04/2026
The identified vulnerability resides within the admin interface of the CRMEB e-commerce platform, specifically targeting the video data saving endpoint located at /adminapi/file/video_data_save in version 6.0.0. This component is designed to handle file uploads and metadata management for video content managed by administrators. The core technical flaw stems from insufficient validation or sanitization of user-supplied input parameters associated with this API endpoint. When an authenticated attacker crafts a specific POST request, they can manipulate the internal logic that processes file paths or deletion triggers. Instead of merely saving new data, the application executes commands to remove existing files based on the manipulated input, leading to arbitrary file deletion capabilities. This type of flaw is classically categorized under CWE-22 for Improper Limitation of a Pathname to a Restricted Directory if path traversal is involved in determining which file to delete, or more broadly under CWE-732 for Incorrect Permission Assignment for Critical Resource if the vulnerability allows access to files outside intended boundaries. The lack of strict constraints on the file paths provided by the client side allows an attacker to specify targets that are not part of the expected video storage directory structure.
From a security operations perspective, this vulnerability poses significant risks related to data integrity and availability rather than confidentiality or remote code execution in its immediate form. An authenticated attacker can leverage this flaw to delete critical system files, configuration backups, or user-uploaded media assets essential for platform operation. The impact extends beyond simple file loss; it can lead to service disruption if core application files are removed, causing the web server or backend services to fail during runtime. Furthermore, in environments where automated backup systems rely on specific file structures being intact, this vulnerability could compromise disaster recovery capabilities by deleting historical data before backups are taken. The attack vector requires authentication, which limits the scope of potential attackers to those who have obtained valid credentials through phishing, credential stuffing, or other means of account takeover. However, once authenticated access is achieved, the ability to delete arbitrary files represents a severe escalation of privilege within the application context, effectively allowing an attacker to perform destructive actions that should be restricted to system administrators with explicit intent and oversight mechanisms in place.
In terms of threat modeling and adversary behavior, this vulnerability aligns with techniques observed in malicious insider threats or compromised admin accounts as described by MITRE ATT&CK frameworks. Specifically, it relates to the Data Destruction tactic where an attacker aims to impair or destroy data on a target system. The method used here involves manipulating API endpoints to trigger unintended side effects, which is consistent with abuse of functionality patterns often seen in complex web applications that expose administrative features via RESTful APIs without adequate authorization checks for destructive operations. Security analysts should note that while the initial access requires authentication, the ease of exploitation through crafted HTTP requests makes this a high-risk vulnerability if proper input validation and output encoding are not enforced at the API gateway or application layer. The absence of robust audit logging for such deletion events further exacerbates the risk by making forensic analysis difficult after an incident occurs.
To mitigate this vulnerability, immediate remediation efforts should focus on implementing strict server-side validation for all file path parameters received in POST requests to the video data save endpoint. Developers must ensure that any file paths provided are resolved against a predefined base directory and verified to remain within acceptable boundaries using canonicalization techniques to prevent directory traversal attacks. Additionally, implementing role-based access control checks specifically for destructive operations can help restrict who is allowed to trigger deletion logic. It is also recommended to introduce transactional integrity or confirmation steps for bulk deletions to prevent accidental or malicious mass file removal. On the infrastructure side, deploying Web Application Firewalls with rulesets capable of detecting anomalous API usage patterns related to file system manipulation can provide an additional layer of defense. Regular security audits and penetration testing focusing on administrative endpoints are essential to identify similar flaws in other components before they can be exploited by adversaries seeking to disrupt business operations or destroy critical data assets within the CRMEB ecosystem.