MongoDB
CVE-2021-20331
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V14 - Data Protection Data exposure prevention
MITRE ATT&CK
2 techniques across 2 tactics: Collection, Discovery The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 4.9 (MEDIUM). Attack characteristics: network attack vector, low complexity, high privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could access sensitive data that should not be disclosed by sending crafted requests to the affected application. |
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Alert meAnalysisAI
Specific versions of the MongoDB C
Driver may erroneously publish events containing authentication-related data to a command listener configured by an application. Rated medium severity (CVSS 4.9), this vulnerability is remotely exploitable, low attack complexity. This Exposure of Sensitive Information vulnerability could allow attackers to access sensitive data that should not be disclosed.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Minimize information in error messages, implement proper access controls, encrypt sensitive data at rest and in transit.
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in nuget
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Exposure of Sensitive Information (CWE-200), which allows attackers to access sensitive data that should not be disclosed. Specific versions of the MongoDB C
Driver may erroneously publish events containing authentication-related data to a command listener configured by an application. The published events may contain security-sensitive data when commands such as "saslStart", "saslContinue", "isMaster", "createUser", and "updateUser" are executed. Without due care, an application may inadvertently expose this authenticated-related information, e.g., by writing it to a log file. This issue only arises if an application enables the command listener feature (this is not enabled by default).12 versions prior to and including 2.12.1. Affected products include: Mongodb C\
Driver.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
Specific versions of the MongoDB C
Driver may erroneously publish events containing authentication-related data to a command listener configured by an application. The published events may contain security-sensitive data when commands such as "saslStart", "saslContinue", "isMaster", "createUser", and "updateUser" are executed. Without due care, an application may inadvertently expose this authenticated-related information, e.g., by writing it to a log file. This issue only arises if an application enables the command listener feature (this is not enabled by default). This issue affects the MongoDB C
Driver v2.12 versions prior to and including 2.12.1.
Threat Intelligence Overview
NVD
CVE.org
EPSS
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Information disclosure occurs when an application unintentionally exposes sensitive data that aids attackers in reconnaissance or directly compromises security.
Affected Products (CPE)NVD
MongoDB before 2.0.9 and 2.2.x before 2.2.4 does not properly validate requests to the nativeHelper function in SpiderMo
The find prototype in scripting/engine_v8.h in MongoDB 2.4.0 through 2.4.4 allows remote authenticated users to cause a
The MongoDB bson JavaScript module (also known as js-bson) versions 0.5.0 to 1.0.x before 1.0.5 is vulnerable to a Regul
Remote code execution in Chartbrew versions prior to 4.8.1 allows authenticated attackers with high privileges to execut
After user deletion in MongoDB Server the improper invalidation of authorization sessions allows an authenticated user's
The default configuration for MongoDB before 2.3.2 does not validate objects, which allows remote authenticated users to
SimStudio below 0.5.74 has a missing authorization on MongoDB tool endpoints that allows attackers to execute arbitrary
MongoDB Server may access non-initialized region of memory leading to unexpected behaviour when zero arguments are calle
MongoDB Compass may be susceptible to code injection due to insufficient sandbox protection settings with the usage of e
Under certain configurations of --tlsCAFile and tls.CAFile, MongoDB Server may skip peer certificate validation which ma
All versions of bson before 1.1.4 are vulnerable to Deserialization of Untrusted Data. Rated critical severity (CVSS 9.8
Memory corruption in the MongoDB BI Connector ODBC Driver (fixed in v1.4.9) occurs when an oversized catalog, schema, or
GitHub PoC
Exploit-DB