CVE-2026-74236 in Exinda AI
Summary
by MITRE • 09/04/2026
GFI Exinda AI before 7.6.5 contains a path traversal vulnerability in the diagnostic file deletion handler. The unlink_or_email_file() function accepts parameters prefixed with v_file_row_ and appends their values directly to a base directory path without sanitizing for directory traversal sequences. An authenticated attacker with Admin privileges can delete arbitrary files from the system in the context of root.
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Analysis
by VulDB Data Team • 09/04/2026
The vulnerability identified in GFI Exinda AI prior to version 7.6.5 represents a critical security flaw rooted in improper input validation within the application's diagnostic management subsystem. Specifically, the issue resides in the unlink_or_email_file function, which is responsible for handling file deletion and email operations related to system diagnostics. This function accepts user-supplied parameters that are prefixed with v_file_row_ and directly concatenates these values onto a predefined base directory path without performing any sanitization or validation checks against malicious input patterns. The absence of rigorous boundary checking allows an attacker to manipulate the intended file path, effectively bypassing the application's access controls and filesystem restrictions. This type of flaw is classically categorized under CWE-22: Improper Limitation of a Pathname to a Restricted Directory, which highlights the failure to restrict inputs that could lead to accessing resources outside of the restricted directory or performing operations on unintended files.
From an operational perspective, this vulnerability poses a severe risk due to its potential for arbitrary file deletion with elevated privileges. An authenticated attacker possessing Admin-level access can exploit this flaw by crafting specific HTTP requests containing path traversal sequences such as ../ in the v_file_row_ parameters. By carefully constructing these payloads, the attacker can navigate up the directory tree from the intended diagnostic folder and target sensitive system files located elsewhere on the server. Because the application executes file operations with root privileges, any successful deletion impacts the entire operating system rather than just a user-specific scope. This capability allows for significant disruption of service integrity, as critical configuration files, logs, or even executable binaries can be removed, leading to system instability, loss of audit trails, and potential denial of service conditions that require manual intervention to restore functionality.
The exploitation vector aligns with the MITRE ATT&CK framework technique T1070: Indicator Removal on Host, specifically under sub-techniques related to file deletion or log clearing. While typically associated with post-exploitation activities by adversaries seeking to cover their tracks, in this context, it can be weaponized for destructive purposes rather than stealth. The vulnerability underscores the danger of trusting administrative interfaces without implementing strict input validation, even when access is restricted to authenticated users. It demonstrates that high-privilege accounts do not inherently mitigate risks if the underlying code fails to enforce least privilege principles at the application logic level or validate file paths against traversal attacks.
To mitigate this vulnerability, organizations must immediately upgrade GFI Exinda AI to version 7.6.5 or later, where the developers have addressed the input validation flaws in the diagnostic handler. In environments where patching is not immediately feasible, network-level controls should be implemented to restrict access to administrative interfaces only from trusted management networks. Additionally, implementing strict file system permissions and monitoring for unusual deletion patterns can help detect potential exploitation attempts. Future development practices should mandate the use of allowlists for expected input values rather than relying on blacklist approaches or simple concatenation without sanitization. Ensuring that application functions operate with minimal necessary privileges also reduces the blast radius of such vulnerabilities, preventing root-level access from being leveraged to compromise core system integrity.