CVE-2026-60062 in NGINX Agent
Summary
by MITRE • 07/15/2026
The NGINX Agent config_dirs directive allows a low-privileged attacker to gain limited read and write access to files outside of the designated secure directory. The config_dirs directive required for this issue can also be configured through NGINX Instance Manager. A successful exploit may allow an attacker to cross a security boundary.
Impact: A remotely authenticated low-privileged attacker could gain limited read and write access outside of the list of directories specified in the NGINX Agent configuration.
Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 07/15/2026
The vulnerability described in this CVE affects the NGINX Agent's config_dirs directive implementation, representing a classic path traversal or directory traversal flaw that undermines the intended security boundaries. This issue specifically targets the agent's configuration management system where administrators define secure directories for configuration file operations. The flaw exists because the directive fails to properly validate or sanitize file paths, allowing attackers to bypass intended access controls and potentially read or write files outside of the designated secure directories. The vulnerability is particularly concerning as it affects a component that handles sensitive configuration data and can be exploited by remotely authenticated users with low privileges.
The technical implementation of this flaw stems from inadequate input validation within the NGINX Agent's path handling mechanisms. When the config_dirs directive is processed, the system should enforce strict boundaries on file access operations but instead permits path manipulation that allows attackers to navigate beyond the specified directories. This behavior creates a security boundary violation where the intended confinement of configuration operations is circumvented. The vulnerability may be exploited through various means including crafted file paths or directory traversal sequences that manipulate how the agent resolves relative paths, potentially allowing access to system files, configuration data from other services, or sensitive operational information.
The operational impact of this vulnerability extends beyond simple unauthorized file access as it represents a potential escalation vector for attackers who can leverage limited read and write capabilities to gather intelligence or modify system configurations. A successful exploitation could enable an attacker to access sensitive configuration files that might contain database credentials, API keys, or other authentication tokens. The fact that the config_dirs directive can also be configured through NGINX Instance Manager adds another layer of attack surface complexity, as attackers might exploit this functionality to modify the agent's operational parameters and further compromise the system. This vulnerability directly violates the principle of least privilege and could facilitate more sophisticated attacks by providing an initial foothold for lateral movement within the infrastructure.
Mitigation strategies should focus on immediate configuration hardening and access control enforcement. Organizations should review and restrict the use of the config_dirs directive to only necessary directories with proper path validation implemented at the agent level. The recommended approach includes implementing strict input sanitization routines that validate all file paths against a whitelist of allowed directories, enforcing mandatory access controls through operating system permissions, and monitoring for anomalous file access patterns. Additionally, administrators should consider disabling or restricting remote configuration capabilities where possible, as this vulnerability demonstrates how remote management features can be weaponized to bypass local security controls.
This vulnerability aligns with CWE-22 (Path Traversal) and CWE-73 (External Control of File Name or Path) classifications, representing a clear violation of proper input validation and access control principles. From an ATT&CK framework perspective, this issue maps to T1059 (Command and Scripting Interpreter) and T1566 (Phishing) as attackers could use the compromised agent to execute commands or gain further access through stolen credentials found in configuration files. The vulnerability also relates to T1078 (Valid Accounts) since it exploits authenticated but low-privileged user accounts to escalate access privileges, and T1543 (Create or Modify System Process) as it could enable attackers to modify agent behavior or system processes.
The security implications of this flaw extend to compliance requirements and audit controls within organizations. Many regulatory frameworks including pci dss, hipaa, and soc 2 require strict enforcement of access controls and proper isolation of sensitive data processing components. This vulnerability represents a failure to implement proper boundary controls that would be expected in a secure configuration management system. Organizations should implement comprehensive monitoring solutions that track agent configuration changes and file access patterns to detect potential exploitation attempts. Regular security assessments should include verification of directory access restrictions and proper validation of all input parameters within configuration management systems to prevent similar issues from being introduced in other components.
The remediation process requires careful consideration of existing configurations and their impact on system functionality. Administrators must ensure that any hardening measures don't inadvertently break legitimate operational workflows while maintaining the security boundaries necessary to protect against this specific vulnerability. The vulnerability demonstrates how seemingly simple configuration directives can create significant security risks when proper input validation is not implemented, highlighting the importance of comprehensive security testing throughout the software development lifecycle and the need for robust security controls in management and monitoring systems.