CVE-2026-9735

Keyfile contents are in MongoDB Server logs

CVE-2026-9735 is fixed in MongoDB on 1 platform by MongoDB 8.3.3 (version 8.3.3), released May 28, 2026. It is not reported as exploited. Patch Radar priority: Routine.

Routine

CVSS

6.8

No vendor severity

Exploitation

None reported

No vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0012

1st percentile

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.

Where it's fixed

Product	Fixed in	Fix	Released
Windows apps
MongoDB	8.3.3	MongoDB 8.3.3	May 28, 2026

Details

Published
June 9, 2026
Weakness
CWE-532: Insertion of sensitive information into log file
Vendor advisory
https://nvd.nist.gov/vuln/detail/CVE-2026-9735

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