CVE-2021-20332

Name: CVE-2021-20332
Creator: NVD / NIST
Published: 2021-08-02T13:15:07.633+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.4/10EPSS 0.31%

Last modified Jun 17, 2026

CVE-2021-20332 is a medium-severity vulnerability rated 4.4/10 on the CVSS scale. Specific MongoDB Rust Driver versions can include credentials used by the connection pool to authenticate connections in the monitoring event that is emitted when the pool is created. The user's logging infrastructure could then potentially ingest these events and unexpectedly leak the credentials. EPSS estimates a 0.31% chance of exploitation in the next 30 days.

Description

Specific MongoDB Rust Driver versions can include credentials used by the connection pool to authenticate connections in the monitoring event that is emitted when the pool is created. The user's logging infrastructure could then potentially ingest these events and unexpectedly leak the credentials. Note that such monitoring is not enabled by default. This issue affects MongoDB Rust Driver version 2.0.0-alpha, MongoDB Rust Driver version 2.0.0-alpha1 and MongoDB Rust Driver version 1.0.0 through to and including 1.2.1

Metrics

CVSS 3.1

4.4/10

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

EPSS Probability

0.31%

22.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-200

Affected Software

Vendor	Product	Versions	Update
Mongodb	Rust Driver	>= 1.0.0, <= 1.2.1	—
Mongodb	Rust Driver	2.0.0	Alpha

References

https://jira.mongodb.org/browse/RUST-591Patch, Vendor Advisory
https://jira.mongodb.org/browse/RUST-591Patch, Vendor Advisory

Timeline

Published: Aug 2, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-20332?

How severe is CVE-2021-20332?

CVE-2021-20332 has a CVSS score of 4.4/10 (MEDIUM severity). The EPSS model estimates a 0.31% probability of exploitation in the next 30 days.

How do I fix CVE-2021-20332?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-20332?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST