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'.
"}],"value":"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'."}],"impacts":[{"capecId":"CAPEC-88","descriptions":[{"lang":"en","value":"CAPEC-88 OS Command Injection"}]},{"capecId":"CAPEC-6","descriptions":[{"lang":"en","value":"CAPEC-6 Argument Injection"}]}],"metrics":[{"cvssV4_0":{"attackComplexity":"LOW","attackRequirements":"PRESENT","attackVector":"LOCAL","baseScore":5.4,"baseSeverity":"MEDIUM","exploitMaturity":"NOT_DEFINED","privilegesRequired":"LOW","providerUrgency":"NOT_DEFINED","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","valueDensity":"NOT_DEFINED","vectorString":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-78","description":"CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')","lang":"en","type":"CWE"}]},{"descriptions":[{"cweId":"CWE-95","description":"CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"ce714d77-add3-4f53-aff5-83d477b104bb","shortName":"openjs","dateUpdated":"2026-01-29T23:06:47.873Z"},"references":[{"name":"Fix commit","tags":["patch"],"url":"https://github.com/nvm-sh/nvm/commit/44e2590cdf257faf7d885e4470be8dc66cec9506"},{"name":"Release v0.40.4","tags":["release-notes"],"url":"https://github.com/nvm-sh/nvm/releases/tag/v0.40.4"},{"name":"nvm GitHub repository","tags":["product"],"url":"https://github.com/nvm-sh/nvm"},{"tags":["x_introduced"],"url":"https://github.com/nvm-sh/nvm/pull/3380"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Upgrade to nvm version 0.40.4 or later, which sanitizes NVM_AUTH_HEADER in the wget code path using nvm_sanitize_auth_header().
"}],"value":"Upgrade to nvm version 0.40.4 or later, which sanitizes NVM_AUTH_HEADER in the wget code path using nvm_sanitize_auth_header()."}],"source":{"discovery":"EXTERNAL"},"timeline":[{"lang":"en","time":"2026-01-09T00:00:00.000Z","value":"Fix committed"},{"lang":"en","time":"2026-01-29T00:00:00.000Z","value":"v0.40.4 released"}],"title":"Command Injection in nvm via NVM_AUTH_HEADER in wget code path"},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-01-30T18:27:21.196460Z","id":"CVE-2026-1665","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-01-30T18:27:52.134Z"}}]}}