PT-2020-8673 · Mongodb+1 · Mongodb Server+2

CVE-2018-20802 · Published 2020-11-23 · Updated 2026-02-25

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions: MongoDB Server versions prior to 3.6.9 MongoDB Server versions prior to 4.0.3

Description: A user authorized to perform database queries may trigger denial of service by issuing specially crafted queries with compound indexes affecting QueryPlanner.

Recommendations: For MongoDB Server versions prior to 3.6.9, update to version 3.6.9 or later. For MongoDB Server versions prior to 4.0.3, update to version 4.0.3 or later. As a temporary workaround, consider restricting access to compound indexes in QueryPlanner to minimize the risk of exploitation.

Fix

DoS

Weakness Enumeration

CWE-394

Related Identifiers

CVE-2018-20802

USN-8064-1

Affected Products

Mongodb Server

Mongodb

Ubuntu

References · 14

• https://cve.org/CVERecord?id=CVE-2018-20802 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2018-20802 · Security Note
• https://osv.dev/vulnerability/UBUNTU-CVE-2018-20802 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-8064-1 · Vendor Advisory
• https://ubuntu.com/security/CVE-2018-20802 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2018-20802 · Vendor Advisory
• https://jira.mongodb.org/browse/SERVER-36993 · Vendor Advisory
• https://osv.dev/vulnerability/USN-8064-1 · Vendor Advisory
• https://t.me/cvenotify/6309 · Telegram Post
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20802 · Note
• https://t.me/cvenotify/94865 · Telegram Post
• https://t.me/cvenotify/68347 · Telegram Post
• https://t.me/cvenotify/6017 · Telegram Post
• https://t.me/cibsecurity/16699 · Telegram Post