CVE-2025-1691: Mongosh MongoDB Shell May Be Susceptible Vulnerability

HIGH
Advisory Identifier: GHSA-43g5-2wr2-q7vj
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CVSS 7.6
CWE-74
Published
Advisory Summary

CVE-2025-1691 is a HIGH (CVSS 7.6) mongodb shell may be susceptible vulnerability (CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')) affecting Mongosh libraries in the npm ecosystem. The issue involves mongodb shell may be susceptible to control character injection via autocomplete. Remediation is available by upgrading affected packages to version 2.3.9.

CVE-2025-1691 at a Glance

CVE Identifier CVE-2025-1691
GHSA Identifier GHSA-43g5-2wr2-q7vj
Severity HIGH
CVSS v3.1 Base Score 7.6
CWE Classification CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Affected Product Mongosh
Package Ecosystem npm
Published Date
Last Updated

Security Impact

CVSS: 7.6

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity High (AC:H)
Privileges Required High (PR:H)
User Interaction Required (UI:R)
Scope Changed (S:C)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2025-1691

To remediate this vulnerability, upgrade all affected Mongosh dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

mongosh fixed: 2.3.9 
npm install mongosh@2.3.9
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

npm ls mongosh

How to Check if You Are Affected

To determine whether your Node.js application is affected by CVE-2025-1691, inspect your project dependencies using npm:

npm ls mongosh

Analyze the terminal output to locate any version of Mongosh in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.3.9), your application is affected.

Note: The npm ls mongosh command inspects dependencies declared in your package.json and lockfile; it does not perform automated runtime dynamic scanning.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'), where the product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. In Mongosh, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

The MongoDB Shell may be susceptible to control character injection where an attacker with control of the mongosh autocomplete feature, can use the autocompletion feature to input and run obfuscated malicious text. This requires user interaction in the form of the user using ‘tab’ to autocomplete text that is a prefix of the attacker’s prepared autocompletion. This issue affects mongosh versions prior to 2.3.9.  The vulnerability is exploitable only when mongosh is connected to a cluster that is partially or fully controlled by an attacker.

CVE-2025-1691 Affected Mongosh Versions

1 component(s)
Fixed Versions:
2.3.9
Product / Package Ecosystem Affected Versions Fixed Version
mongosh
npm/mongosh
npm
< 2.3.9
2.3.9

References

NVD — CVE-2025-1691 NVD
https://nvd.nist.gov/vuln/detail/CVE-2025-1691
Mongosh Source Repository REPOSITORY
https://github.com/mongodb-js/mongosh
jira.mongodb.org/browse/mongosh-2024 WEB
https://jira.mongodb.org/browse/MONGOSH-2024

Frequently Asked Questions

What is CVE-2025-1691?
CVE-2025-1691 is a security vulnerability in Mongosh involving MongoDB Shell may be susceptible to Control Character Injection via autocomplete under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection').
Which Mongosh versions are affected?
Affected versions include releases prior to 2.3.9 across affected packages: mongosh.
What version fixes CVE-2025-1691?
Upgrading to 2.3.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is mongosh affected?
Yes, mongosh is affected in releases prior to 2.3.9. Upgrade your dependency to 2.3.9 or later.
What is the CVSS score of CVE-2025-1691?
CVE-2025-1691 has a CVSS v3.1 base score of 7.6 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2025-1691?
CVE-2025-1691 is classified under CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') (The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.).
How can I check npm dependencies for CVE-2025-1691?
Run the dependency tree command: 'npm ls mongosh'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-43g5-2wr2-q7vj",
  "modified" : "2025-02-27T17:15:42Z",
  "published" : "2025-02-27T15:31:51Z",
  "aliases" : [ "CVE-2025-1691" ],
  "summary" : "MongoDB Shell may be susceptible to Control Character Injection via autocomplete",
  "details" : "The MongoDB Shell may be susceptible to control character injection where an attacker with control of the mongosh autocomplete feature, can use the autocompletion feature to input and run obfuscated malicious text. This requires user interaction in the form of the user using ‘tab’ to autocomplete text that is a prefix of the attacker’s prepared autocompletion. This issue affects mongosh versions prior to 2.3.9. \n\nThe vulnerability is exploitable only when mongosh is connected to a cluster that is partially or fully controlled by an attacker.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "npm",
      "name" : "mongosh"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "2.3.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2025-1691"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/mongodb-js/mongosh"
  }, {
    "type" : "WEB",
    "url" : "https://jira.mongodb.org/browse/MONGOSH-2024"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-74" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2025-02-27T17:15:42Z",
    "nvd_published_at" : "2025-02-27T13:15:11Z"
  }
}