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CVE-2018-20804

22
FAUCET Score

CVE-2018-20804 describes a denial-of-service vulnerability affecting MongoDB Server versions prior to 4.0.10 and 3.6.13. An authenticated user with database query privileges can trigger this by issuing specially crafted applyOps invocations. With a CVSS score of 6.5 (Medium), this vulnerability can be exploited remotely with low attack complexity, leading to a high impact on availability. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.6.0, < 3.6.13CPE matchmatch criteria
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.10CPE matchmatch criteria
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.23%
Probability of exploitation in next 30 days
EPSS Percentile
65.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0123 is in the 80th percentile among its peer group of 21,977 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Vendor Patches (1)

redhatend of lifevia redhat_api
Product: Red Hat Software CollectionsFixed in: rh-mongodb36-mongodb

Vendor Advisories (1)

redhatCVE-2018-20804Moderate

mongodb: Denial of service via specially crafted applyOps invocations

Nov 23, 2020

References

jira.mongodb.org / browse/SERVER-35636
Issue TrackingVendor Advisory