Loading HuntDB...
Hunt
Vulnerability Intelligence by wss.sh
Home Daily Briefings High Impact CVEs Recent Exploits KEV Catalog GitHub Advisories Latest Updates Security News
Sign In Sign Up

CVE-2021-32040

MEDIUM
Published 2022-04-12T14:15:16.692284Z
Actions:

Expert Analysis

Professional remediation guidance

Get tailored security recommendations from our analyst team for CVE-2021-32040. We'll provide specific mitigation strategies based on your environment and risk profile.

CVSS Score

V3.1
6.5
/10
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Base Score Metrics
Exploitability: N/A Impact: N/A

EPSS Score

v2025.03.14
0.007
probability
of exploitation in the wild

There is a 0.7% chance that this vulnerability will be exploited in the wild within the next 30 days.

Updated: 2025-06-25
Exploit Probability
Percentile: 0.718
Higher than 71.8% of all CVEs

Attack Vector Metrics

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED

Impact Metrics

Confidentiality
NONE
Integrity
NONE
Availability
HIGH

Description

It may be possible to have an extremely long aggregation pipeline in conjunction with a specific stage/operator and cause a stack overflow due to the size of the stack frames used by that stage. If an attacker could cause such an aggregation to occur, they could maliciously crash MongoDB in a DoS attack. This vulnerability affects MongoDB Server v4.4 versions prior to and including 4.4.28, MongoDB Server v5.0 versions prior to 5.0.4 and MongoDB Server v4.2 versions prior to 4.2.16.

Workaround: >= v4.2.16 users and all v4.4 users can add the --setParameter internalPipelineLengthLimit=50 instead of the default 1000 to mongod at startup to prevent a crash.

Available Exploits

No exploits available for this CVE.

Related News

No news articles found for this CVE.

Affected Products

MongoDB Inc.

MongoDB Server

Affected Versions:

5.0 4.4 4.2
mongodb

mongodb

Affected Versions:

5.0 4.4 4.2

GitHub Security Advisories

Community-driven vulnerability intelligence from GitHub

⚠ Unreviewed HIGH

GHSA-hmq6-2xj3-79w5

Advisory Details

It may be possible to have an extremely long aggregation pipeline in conjunction with a specific stage/operator and cause a stack overflow due to the size of the stack frames used by that stage. If an attacker could cause such an aggregation to occur, they could maliciously crash MongoDB in a DoS attack. This vulnerability affects MongoDB versions prior to 5.0.4, 4.4.11, 4.2.16.

CVSS Scoring

CVSS Score

7.5

CVSS Vector

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

References

ADVISORY https://nvd.nist.gov/vuln/detail/CVE-2021-32040
WEB https://jira.mongodb.org/browse/SERVER-58203
WEB https://jira.mongodb.org/browse/SERVER-59299
WEB https://jira.mongodb.org/browse/SERVER-60218
WEB https://security.netapp.com/advisory/ntap-20220609-0005

Advisory provided by GitHub Security Advisory Database. Published: April 13, 2022, Modified: February 23, 2024

References

https://jira.mongodb.org/browse/SERVER-58203
https://jira.mongodb.org/browse/SERVER-59299
https://jira.mongodb.org/browse/SERVER-60218
https://security.netapp.com/advisory/ntap-20220609-0005/
Published: 2022-04-12T14:15:16.692284Z
Last Modified: 2024-09-16T20:03:21.667Z
Copied to clipboard!