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CVE-2020-7929

22
FAUCET Score

CVE-2020-7929 describes a denial-of-service vulnerability in MongoDB Server versions prior to 3.6.21 and 4.0.20. An authenticated user can trigger this by submitting a specially crafted database query containing a specific regex type. With a CVSS score of 6.5 (Medium), this vulnerability is network-exploitable with low complexity, requiring only low privileges to achieve high availability impact. There is currently no public exploit code, evidence of active exploitation, or significant community discussion surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
>= 3.6.0, < 3.6.21CPE matchmatch criteria
cpe:2.3:a:mongodb:mongodb:*:*:*:*:*:*:*:*
>= 4.0.0, < 4.0.20CPE 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
1.29%
Probability of exploitation in next 30 days
EPSS Percentile
67.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0129 is in the 81st percentile among its peer group of 21,974 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-2020-7929Moderate

mongodb: Denial of service through specially crafted regex

Mar 1, 2021

References

jira.mongodb.org / browse/SERVER-51083
Issue TrackingPatchVendor Advisory