CVE-2026-84967

Arbitrary command execution via shell-expanded connection string in Launch MongoDB Shell terminal

MEDIUM
4.3
CVSS Score
Published: September 3, 2026 at 03:18 PM UTC
Updated: September 9, 2026 at 08:07 PM UTC
1 product affected across 1 vendorMongoDB

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

A component of the MongoDB extension for Visual Studio Code does not neutralize special characters in a connection string before that value is placed into a command line the extension composes for an integrated terminal. An unauthenticated remote unauthorized-user who persuades a developer to accept a user-supplied connection target, and then to open the extension's shell feature, can place characters of the unauthorized-user’s choosing into that command line. No privileges on the developer's machine are required, but several user actions are. The confirmation the developer sees does not display the supplied text.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

1.13.0 ≤ v < 1.17.11.13.0
Affected range stops below 1.17.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Issue Tracking
Source: cverecord
https://jira.mongodb.org/browse/VSCODE-798

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMmongodb
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-78

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