CVE-2021-32036 Denial of Service and Data Integrity vulnerability in features command
An authenticated user can cause denial of service and potential data integrity issues by repeatedly invoking the features command.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-32036?
CVE-2021-32036 is a medium-severity denial of service vulnerability in Mongodb Mongodb, published on 4 Feb 2022. Any signed-in user can exploit it over the network, with no action from the victim.
Official 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
Weakness: CWE-770
Which versions are affected by CVE-2021-32036?
1 open source package ship an affected version, including mongodb. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
mongodb Bitnami | From 2.0.0 | 4.2.18, 4.4.10, 5.0.4 |
Products include Mongodb Mongodb.
How do I fix CVE-2021-32036?
Upgrade mongodb to a fixed version for your release line: 4.2.18, 4.4.10 or 5.0.4.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2021-32036 being exploited?
There is no known exploitation of CVE-2021-32036 in the wild and no public exploit code.
Other vulnerabilities in Mongodb Mongodb
- CVE-2025-14847 MongoDB and MongoDB Server Improper Handling of Length Parameter Inconsistency
- CVE-2026-82067 Auth bypass in MongoDB Server
- CVE-2026-13072 MongoDB Improper Input Validation in Compute Mode External Data Processing Leading to Memory Corruption
- CVE-2017-15535 Denial of service in n/a
- CVE-2026-18691 Improper Authentication in MongoDB Intra-Cluster Connections Allows Credential Exposure
Sources
Also known as BIT-mongodb-2021-32036, CLSA-2022-1645465490, GHSA-4wcp-phx2-2w2x, UBUNTU-CVE-2021-32036.