CVE-2026-9735

Credential disclosure via unredacted SASL parameter logging

Published Jun 9, 2026 · Updated Jun 9, 2026

Sensitive-data logging in MongoDB Server 8.3.0 through 8.3.2 allows local users to read SASL authentication credentials from server logs. The connection-health authentication metrics path writes full SASL authentication parameters to the server log without applying credential redaction. Exposure requires connection-health metric logging, which defaults to enabled, and access to the resulting server log.

CVSS severity6.8
Medium
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive-data logging in MongoDB Server 8.3.0 through 8.3.2 allows local users to read SASL authentication credentials from server logs. The connection-health authentication metrics path writes full SASL authentication parameters to the server log without applying credential redaction. Exposure requires connection-health metric logging, which defaults to enabled, and access to the resulting server log.

The record

CVE
CVE-2026-9735
Published
Jun 9, 2026
Updated
Jun 9, 2026
Vendor
MongoDB
Product
MongoDB Server
Classifications
CWE-532, T1552.001
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=8.3.0 <8.3.3

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

MongoDB · MongoDB Serverversion=8.3.0 <8.3.3

Published CVSS scores

5.5MongoDB, Inc.CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.8MongoDB, Inc.CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1552.001Unsecured Credentials: Credentials In Files

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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