CVE-2022-4858 in Server
Summary
by MITRE • 12/30/2022
Insertion of Sensitive Information into Log Files in M-Files Server before 22.10.11846.0 could allow to obtain sensitive tokens from logs, if specific configurations were set.
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Analysis
by VulDB Data Team • 02/23/2026
The vulnerability described in CVE-2022-4858 represents a critical security flaw in M-Files Server versions prior to 22.10.11846.0 that exposes sensitive authentication tokens through log file exposure. This issue falls under the category of information disclosure vulnerabilities where confidential data intended for secure handling inadvertently becomes accessible through logging mechanisms. The vulnerability specifically affects systems where particular configuration settings are implemented, creating a pathway for unauthorized access to authentication tokens that could compromise system integrity and user credentials.
The technical root cause of this vulnerability stems from improper handling of sensitive information within the logging subsystem of M-Files Server. When specific configurations are enabled, the system logs may contain authentication tokens, session identifiers, or other credential-related data without adequate sanitization or protection measures. This flaw represents a direct violation of secure logging practices where sensitive information should never be written to log files in an unencrypted or unobfuscated format. The vulnerability is classified under CWE-532 which specifically addresses insertion of sensitive information into log files, making it a well-documented category of information exposure flaws.
The operational impact of this vulnerability extends beyond simple credential theft to encompass potential system compromise and unauthorized access to sensitive document repositories. Attackers who gain access to these log files could extract authentication tokens and use them to impersonate legitimate users, access restricted documents, or escalate privileges within the M-Files environment. The exposure of tokens in log files creates a persistent security risk as these credentials could remain valid for extended periods, potentially allowing attackers to maintain access even after initial compromise. This vulnerability particularly affects organizations that rely heavily on M-Files for document management and collaboration, where the exposure of authentication tokens could lead to significant data breaches and regulatory compliance violations.
Organizations should implement immediate mitigation strategies including updating to M-Files Server version 22.10.11846.0 or later, which contains the necessary patches to address the logging vulnerability. Additionally, system administrators should review and modify existing log configurations to ensure sensitive information is properly sanitized before logging, implementing log filtering mechanisms and access controls for log files. The remediation process should include comprehensive log file audits to identify and remove any previously exposed sensitive data, while establishing monitoring procedures to detect potential log file access by unauthorized parties. This vulnerability aligns with ATT&CK technique T1562.006 which focuses on credential dumping and information exposure through log files, emphasizing the need for comprehensive logging security controls and regular security assessments to prevent such exposure scenarios.