CVE-2018-20804

Name: CVE-2018-20804
Creator: NVD / NIST
Published: 2020-11-23T16:15:12.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.23%

Last modified Jun 17, 2026

CVE-2018-20804 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. A user authorized to perform database queries may trigger denial of service by issuing specially crafted applyOps invocations. This issue affects MongoDB Server v4.0 versions prior to 4.0.10 and MongoDB Server v3.6 versions prior to 3.6.13.. EPSS estimates a 1.23% chance of exploitation in the next 30 days.

Description

A user authorized to perform database queries may trigger denial of service by issuing specially crafted applyOps invocations. This issue affects MongoDB Server v4.0 versions prior to 4.0.10 and MongoDB Server v3.6 versions prior to 3.6.13.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.23%

65.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Mongodb	Mongodb	>= 3.6.0, < 3.6.13
Mongodb	Mongodb	>= 4.0.0, < 4.0.10

References

https://jira.mongodb.org/browse/SERVER-35636Issue Tracking, Vendor Advisory
https://jira.mongodb.org/browse/SERVER-35636Issue Tracking, Vendor Advisory

Timeline

Published: Nov 23, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-20804?

How severe is CVE-2018-20804?

CVE-2018-20804 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.23% probability of exploitation in the next 30 days.

How do I fix CVE-2018-20804?

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-2018-20804?

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

Scan your code now

Source: NVD / NIST