Arbitrary command execution via shell-expanded connection string in Launch MongoDB Shell terminal (CVE-2026-84967) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-84967

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

Answer in brief

CVE-2026-84967 records a Unknown severity vulnerability in Arbitrary command execution via shell-expanded connection string in Launch MongoDB Shell terminal. The current sources do not mark it as known exploited. The current feed maps MongoDB/MongoDB for VS Code (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 3, 2026Updated Sep 3, 2026Source checked Sep 3, 2026First seen by HOL Sep 3, 2026Material review Sep 3, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Available

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps MongoDB/MongoDB for VS Code (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
MongoDB/MongoDB for VS Codegeneric	>=1.13.0 <1.17.1	1.17.1

Recommended response

Check inventory. Check lockfiles and deployed manifests for MongoDB/MongoDB for VS Code.
Review the reported fix. Update MongoDB/MongoDB for VS Code to 1.17.1 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

Published upstream
Sep 3, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 3, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 3, 2026

Sources and claim methodology

Source referencejira.mongodb.org

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.