MongoDB Server Exposes Auth Credentials in Logs During SASL Auth
CVE-2026-9735 Published on June 9, 2026
Keyfile contents are in MongoDB Server logs
MongoDB server may log authentication parameters, including credentials, to the server log during SASL authentication. When connection health metric logging is enabled, the full authentication parameters are written to the log without redaction.
Vulnerability Analysis
CVE-2026-9735 can be exploited with local system access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have a high impact on confidentiality, with no impact on integrity and availability.
Weakness Type
Insertion of Sensitive Information into Log File
Information written to log files can be of a sensitive nature and give valuable guidance to an attacker or expose sensitive user information.
Products Associated with CVE-2026-9735
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Affected Versions
MongoDB Server:- Version 8.3.0 and below 8.3.3 is affected.