MongoDB up to 3.6.17/4.0.14/4.2.2/4.3.2 Authorization Subsystem collapse of data into unsafe value

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in MongoDB up to 3.6.17/4.0.14/4.2.2/4.3.2. This issue affects some unknown processing of the component Authorization Subsystem. Executing a manipulation can lead to collapse of data into unsafe value. This vulnerability is registered as CVE-2020-7921. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability has been found in MongoDB up to 3.6.17/4.0.14/4.2.2/4.3.2 (Database Software) and classified as critical. This vulnerability affects an unknown function of the component Authorization Subsystem. The manipulation with an unknown input leads to a collapse of data into unsafe value vulnerability. The CWE definition for the vulnerability is CWE-182. The product filters data in a way that causes it to be reduced or "collapsed" into an unsafe value that violates an expected security property. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Improper serialization of internal state in the authorization subsystem in MongoDB Server's authorization subsystem permits a user with valid credentials to bypass IP whitelisting protection mechanisms following administrative action. This issue affects MongoDB Server v4.2 versions prior to 4.2.3; MongoDB Server v4.0 versions prior to 4.0.15; MongoDB Server v4.3 versions prior to 4.3.3and MongoDB Server v3.6 versions prior to 3.6.18.

The weakness was published 05/06/2020. This vulnerability was named CVE-2020-7921 since 01/23/2020. The attack can be initiated remotely. The successful exploitation requires a single authentication. Successful exploitation requires user interaction by the victim. There are neither technical details nor an exploit publicly available.

Upgrading to version 3.6.18, 4.0.15, 4.2.3 or 4.3.3 eliminates this vulnerability.

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Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.1
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 4.6
CNA Vector (MongoDB, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Collapse of data into unsafe value
CWE: CWE-182
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: MongoDB 3.6.18/4.0.15/4.2.3/4.3.3

Timelineinfo

01/23/2020 🔍
05/06/2020 +104 days 🔍
05/07/2020 +1 days 🔍
02/23/2026 +2118 days 🔍

Sourcesinfo

Status: Confirmed

CVE: CVE-2020-7921 (🔍)
GCVE (CVE): GCVE-0-2020-7921
GCVE (VulDB): GCVE-100-154840

Entryinfo

Created: 05/07/2020 08:15
Updated: 02/23/2026 22:23
Changes: 05/07/2020 08:15 (36), 05/07/2020 08:20 (12), 10/15/2020 19:03 (1), 02/23/2026 22:23 (41)
Complete: 🔍
Cache ID: 216::103

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