CVE-2026-64881 in Security Center
Summary
by MITRE • 07/22/2026
The audit file upload handler does not sanitize filenames, allowing shell metacharacters to flow into system command execution. This input validation failure enables command injection when chained with a related vulnerability.
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Analysis
by VulDB Data Team • 07/22/2026
The vulnerability described represents a critical command injection flaw within the audit file upload handler component of the system architecture. This weakness stems from inadequate input sanitization practices during the file upload process, where user-supplied filenames are not properly validated or filtered before being processed by underlying system commands. The absence of proper filename sanitization creates an attack vector that allows malicious actors to inject shell metacharacters directly into command execution contexts, potentially enabling arbitrary code execution on the affected system.
The technical implementation of this vulnerability aligns with common security weaknesses documented in the CWE database under categories related to improper input validation and command injection. When combined with other related vulnerabilities within the same system, the attack surface expands significantly as attackers can chain multiple flaws to achieve more sophisticated exploitation outcomes. The root cause lies in the lack of proper input filtering mechanisms that should validate and sanitize all user-provided data before it reaches any system command execution points. This failure creates a pathway where shell metacharacters such as semicolons, pipes, or backticks can be passed directly into command-line interfaces, bypassing normal security controls.
From an operational impact perspective, this vulnerability poses severe risks to system integrity and confidentiality, potentially allowing attackers to execute arbitrary commands with the privileges of the affected service account. The implications extend beyond simple data theft to include complete system compromise, lateral movement within network environments, and potential persistence mechanisms that could remain undetected for extended periods. Attackers could leverage this vulnerability to establish backdoors, exfiltrate sensitive data, or disrupt system operations through destructive command execution.
Mitigation strategies should focus on implementing comprehensive input validation and sanitization measures that filter out potentially dangerous characters from all user-supplied filenames before processing. The system architecture must incorporate proper escape sequence handling and use secure coding practices that prevent direct command injection vulnerabilities. Organizations should implement principle of least privilege controls, regular security audits, and maintain up-to-date vulnerability management processes to address similar weaknesses across their infrastructure. This vulnerability also demonstrates the importance of following established security frameworks such as those outlined in the mitre attack framework, where command injection remains a persistent threat vector that requires systematic defense measures including proper input validation, secure coding practices, and comprehensive monitoring solutions to detect anomalous command execution patterns.