Description
An attacker with basic CRUD permissions on a replicated collection can run the applyOps command with specially malformed oplog entries, resulting in a potential denial of service on secondaries. This issue affects MongoDB Server v4.0 versions prior to 4.0.27; MongoDB Server v4.2 versions prior to 4.2.16; MongoDB Server v4.4 versions prior to 4.4.9.
References (1)
Core 1
Core References
Issue Tracking, Patch, Vendor Advisory x_refsource_misc
https://jira.mongodb.org/browse/SERVER-36263
Scores
CVSS v3
6.5
EPSS
0.0104
EPSS Percentile
59.6%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (1)
mongodb/mongodb
4.0.0 - 4.0.25
Published
Dec 15, 2021
Tracked Since
Feb 18, 2026