CVE-2026-1665

What it is

A command injection vulnerability exists in nvm (Node Version Manager) versions 0.40.3 and below. The nvm_download() function uses eval to execute wget commands, and the NVM_AUTH_HEADER environment variable was not sanitized in the wget code path (though it was sanitized in the curl code path). An attacker who can set environment variables in a victim's shell environment (e.g., via malicious CI/CD configurations, compromised dotfiles, or Docker images) can inject arbitrary shell commands that execute when the victim runs nvm commands that trigger downloads, such as 'nvm install' or 'nvm ls-remote'.

At a glance

Exploitability

Can be exploited locally on the machine with a low-privilege account, but needs a user to act. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.8% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-01-29 23:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 10:16 UTC Last updatedMost recent change to the record

Details

Published

2026-01-29 23:16 UTC

Last modified

2026-06-17 10:16 UTC

Exploit probability

0.8% · EPSS, next 30 days

Weakness

CWE-78 · OS command injection

Record status

Deferred

Attack profile CVSS 4.0 · 5.4

Attack vector

Local

Complexity

Low

Attack requirements

Present

Privileges needed

Low

User interaction

Passive

Confidentiality

High

Integrity

High

Availability

High