CVE-2026-66382 in Artifactory
Summary
by MITRE • 08/12/2026
An authenticated user may write files outside the intended Artifactory work directory under specific conditions.
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Analysis
by VulDB Data Team • 08/12/2026
This vulnerability represents a critical path traversal flaw that allows authenticated users to write files outside the designated Artifactory work directory, potentially leading to arbitrary file system modifications and unauthorized access to sensitive system resources. The issue stems from insufficient input validation and improper path resolution mechanisms within the file handling components of the Artifactory platform. When an authenticated user submits crafted file paths or names, the system fails to properly sanitize or validate these inputs before processing them, enabling malicious actors to manipulate the target directory location for file operations. This vulnerability falls under the common weakness enumeration CWE-22 Path Traversal and aligns with several techniques documented in the MITRE ATT&CK framework under the T1059 Command and Scripting Interpreter and T1078 Valid Accounts categories. The flaw specifically manifests when Artifactory processes file upload operations or directory creation requests where user-supplied path components are not adequately constrained against directory traversal sequences such as ../ or ..\, allowing attackers to escape the intended work directory boundaries. Operational impact of this vulnerability extends beyond simple unauthorized file writing, as it could enable attackers to overwrite critical system files, inject malicious code into the application environment, or establish persistence mechanisms within the Artifactory infrastructure. The authenticated nature of the exploit means that attackers must first obtain valid credentials, but once achieved, they can leverage this vulnerability to escalate their privileges and compromise the entire artifact repository system.
The technical implementation of this vulnerability involves improper validation of file paths during upload operations where the application relies on user-provided input without sufficient sanitization. Artifactory's file handling logic appears to process directory traversal sequences in user-supplied paths without adequate filtering or normalization, allowing maliciously crafted inputs to bypass intended security boundaries. This flaw typically occurs when the system uses string concatenation or path construction methods that do not properly validate or sanitize user input before executing file system operations. The vulnerability is particularly dangerous because it operates within the context of an authenticated session, meaning that attackers have legitimate access rights to the system but can abuse these privileges to perform unauthorized actions outside their intended scope. Organizations using Artifactory are at risk of data compromise, application integrity violations, and potential system-wide infiltration if this vulnerability remains unpatched.
Mitigation strategies for this vulnerability should include immediate implementation of proper input validation and sanitization mechanisms that prevent directory traversal sequences from being processed within file operations. Organizations must ensure that all user-supplied paths undergo rigorous validation before any file system operations are performed, including normalization of path components and explicit rejection of traversal sequences. The recommended approach involves implementing a whitelist-based validation system where only explicitly allowed characters and path structures are permitted, combined with proper path resolution that maintains strict boundaries around the intended work directory. Additionally, organizations should consider implementing privilege separation techniques where file operations occur within restricted sandboxed environments that prevent access to system-critical directories. Regular security audits and penetration testing should be conducted to identify similar vulnerabilities in other components of the Artifactory infrastructure, while comprehensive monitoring should be established to detect anomalous file system activities that may indicate exploitation attempts. The vulnerability also highlights the importance of principle of least privilege implementation and proper access control mechanisms within repository management systems to minimize potential damage from such flaws.