Medium

MongoDB C# Driver Risk of Exposing Authentication Data via Command Listener

  • Disclosed: 24.05.2022
  • Updated: 11.10.2026 11:22

Specific versions of the MongoDB C# Driver may erroneously publish events containing authentication-related data to a command listener configured by an application. The published events may contain security-sensitive data when commands such as "saslStart", "saslContinue", "isMaster", "createUser", and "updateUser" are executed. Without due care, an application may inadvertently expose this authenticated-related information, e.g., by writing it to a log file. This issue only arises if an application enables the command listener feature (this is not enabled by default). This issue affects the MongoDB C# Driver 2.12 <= 2.12.1.

Affected software

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PlatformPackageVulnerable versionsFixed in
.NET (NuGet) mongodb.driver >= 2.11.0, < 2.12.2 2.12.2

References

CVSS score 4.9/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Weakness (CWE)
CWE-200
Platform
.NET (NuGet)
Package
mongodb.driver
Disclosed
24.05.2022
Updated
11.10.2026 11:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-p9rv-qgqw-jx2w - CC BY 4.0

Vulnerability history: mongodb.driver

All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.

Total entries
2
First → latest
05.2022 02.2023
Without a fix
0
Exploited in attacks
0

Severity breakdown

  • High 1
  • Medium 1

Disclosures per year

  1. 2022: 1
  2. 2023: 1
  3. 2024: 0
  4. 2025: 0
  5. 2026: 0
  1. MongoDB C# Driver Risk of Exposing Authentication Data via Command Listener this entry
    Medium · 4.9 CVE-2021-20331 >= 2.11.0, < 2.12.2 2.12.2

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