CVE-2021-32036: Denial of Service and Data Integrity vulnerability in features command

Severity: high (CVSS 7.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.0% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2022-02-04 · updated 2026-06-17
Weakness: CWE-770

Description

An authenticated user without any specific authorizations may be able to repeatedly invoke the features command where at a high volume may lead to resource depletion or generate high lock contention. This may result in denial of service and in rare cases could result in id field collisions. This issue affects MongoDB Server v5.0 versions prior to and including 5.0.3; MongoDB Server v4.4 versions prior to and including 4.4.9; MongoDB Server v4.2 versions prior to and including 4.2.16 and MongoDB Server v4.0 versions prior to and including 4.0.28

Affected products

MongoDB: from 2.0.0 before 4.2.18; from 4.4.0 before 4.4.10; from 5.0.0 before 5.0.4 — fixed in 4.2.18, 4.4.10, 5.0.4

How to fix

Upgrade to a fixed version: MongoDB 4.2.18, 4.4.10, 5.0.4. Check the vendor advisory for mitigations.

References

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