CVE-2026-0519 in Secure Access
Summary
by MITRE • 01/17/2026
In Secure Access 12.70 and prior to 14.20, the logging subsystem may write an unredacted authentication token to logs under certain configurations. Any party with access to those logs could read the token and reuse it to access an integrated system.
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Analysis
by VulDB Data Team • 02/02/2026
The vulnerability identified as CVE-2026-0519 affects the Secure Access platform version 12.70 and earlier versions prior to 14.20, representing a critical security flaw in the system's logging infrastructure. This issue stems from improper handling of authentication tokens within the logging subsystem, where sensitive credential information is written to log files without adequate redaction or sanitization processes. The vulnerability specifically manifests when certain configurations are applied to the system, creating an attack surface that exposes authentication tokens to unauthorized parties who gain access to the log files. The logging subsystem in question appears to process and record authentication events without implementing proper token sanitization, potentially storing complete authentication tokens alongside other log data.
The technical flaw underlying CVE-2026-0519 corresponds to CWE-532, which addresses information exposure through log files containing sensitive data, and CWE-200, which covers information exposure to unintended recipients. This vulnerability directly enables credential stuffing and session hijacking attacks, as any individual with access to the affected log files can extract complete authentication tokens and subsequently impersonate legitimate users within integrated systems. The flaw operates at the application level within the logging component, bypassing normal authentication mechanisms and creating a persistent security risk that can remain undetected for extended periods. Attackers exploiting this vulnerability can leverage stolen tokens to gain unauthorized access to protected resources, potentially escalating privileges and moving laterally within network environments.
The operational impact of this vulnerability extends beyond immediate unauthorized access, creating long-term security implications for organizations utilizing affected Secure Access versions. The exposure of authentication tokens through log files enables attackers to maintain persistent access to integrated systems, as these tokens can be reused multiple times without detection. This vulnerability particularly affects environments where log files are not adequately protected or where multiple administrative users have access to system logs, creating a significant risk for compliance and audit purposes. The attack vector aligns with ATT&CK technique T1078.004, which involves valid accounts used for lateral movement, and T1567.002, which covers the use of stolen credentials for privilege escalation. Organizations may face regulatory penalties and compliance violations when log files containing unredacted tokens are discovered during security audits or incident investigations.
Mitigation strategies for CVE-2026-0519 should prioritize immediate patching of affected systems to version 14.20 or later, which includes fixes for the logging subsystem's token handling processes. System administrators must implement proper log file access controls, ensuring that only authorized personnel can access authentication-related logs and that these files are stored with appropriate file permissions and encryption. The logging configuration should be reviewed to implement token redaction policies that automatically sanitize authentication tokens before writing them to log files. Organizations should establish monitoring procedures to detect unauthorized access attempts to log files and implement log rotation policies that prevent long-term storage of sensitive information. Additionally, security teams should conduct comprehensive audits of existing log files to identify and remove any previously exposed authentication tokens, while implementing automated scanning tools to prevent future occurrences of this vulnerability.