# CVE-2026-9735: Keyfile contents are in MongoDB Server logs

> CVE-2026-9735: Keyfile contents are in MongoDB Server logs. CVSS 5.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-9735
Last updated: 2026-07-23T09:10:00Z

- Published: 2026-06-09 22:40 UTC · Updated: 2026-07-23 09:10 UTC · Assigner: mongodb
- CVSS: 5.5 (CVSS 3.1) · Severity: Medium · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- EPSS: 0.12%, 2th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-532

## Description

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.

## Affected vendors and products

- MongoDB: MongoDB Server

## Tracked companies

- [MongoDB Atlas](https://rewindex.com/company/mongodb-atlas.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-9735)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-9735)
- [https://jira.mongodb.org/browse/SERVER-126506](https://jira.mongodb.org/browse/SERVER-126506)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-9735 · Markdown: https://rewindex.com/cve/CVE-2026-9735.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-9735 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:13:06.133Z