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2 vulnerabilities by nvm-sh
CVE-2026-10796 (GCVE-0-2026-10796)
Vulnerability from cvelistv5 – Published: 2026-06-04 17:02 – Updated: 2026-06-04 18:11
VLAI
Title
nvm executes commands from a malicious Node.js mirror's version strings
Summary
nvm (Node Version Manager) through 0.40.4 executes arbitrary commands from version strings supplied by the configured Node.js/io.js mirror. Commands such as `nvm install` read the available versions from the mirror's index.tab and use the selected version, without sanitization, to build download URLs and shell/awk commands. Two sinks are affected by the same untrusted input: nvm_download() built a curl/wget command string and ran it with `eval`, so a version field containing command substitution (for example $(id)) was executed by the local shell; and nvm_get_checksum() interpolated the version-derived download slug into an awk program, so a crafted version could execute arbitrary commands via awk's system(). An attacker who controls the configured mirror, supplies mirror content to a user or CI on a non-default mirror, or machine-in-the-middles a non-TLS mirror can ∴ run arbitrary commands with the privileges of the user running nvm. The default mirror (https://nodejs.org over TLS) is not affected. Fixed on master (pending the next tagged release) by passing every argument as a literal argv element instead of using eval, by passing the value to awk as data via -v instead of interpolating it into the program, and by rejecting any version outside the Node.js/io.js version grammar before it is used.
Severity
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Assigner
References
4 references
Credits
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CVE-2026-1665 (GCVE-0-2026-1665)
Vulnerability from cvelistv5 – Published: 2026-01-29 23:04 – Updated: 2026-01-30 18:27
VLAI
Title
Command Injection in nvm via NVM_AUTH_HEADER in wget code path
Summary
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'.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/nvm-sh/nvm/commit/44e2590cdf25… | patch |
| https://github.com/nvm-sh/nvm/releases/tag/v0.40.4 | release-notes |
| https://github.com/nvm-sh/nvm | product |
| https://github.com/nvm-sh/nvm/pull/3380 | x_introduced |
Impacted products
Credits
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