CVE-2026-10796Public exploitNetwork attack vector

Command execution via mirror-supplied version strings

Published Jun 4, 2026 · Updated Jun 4, 2026

OS command injection in nvm through 0.40.4 allows remote attackers to execute shell commands via crafted mirror version strings. The nvm_download function re-parses a URL-bearing curl or wget command with eval, while nvm_get_checksum embeds the same value in awk program text. Exploitation requires a user or CI job to resolve a version from an attacker-controlled non-default mirror or an intercepted non-TLS mirror; the default HTTPS mirror is unaffected, and commands inherit the privileges of the user running nvm.

CVSS severity7.5
High
EPSS probability0.46%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in nvm through 0.40.4 allows remote attackers to execute shell commands via crafted mirror version strings. The nvm_download function re-parses a URL-bearing curl or wget command with eval, while nvm_get_checksum embeds the same value in awk program text. Exploitation requires a user or CI job to resolve a version from an attacker-controlled non-default mirror or an intercepted non-TLS mirror; the default HTTPS mirror is unaffected, and commands inherit the privileges of the user running nvm.

The record

CVE
CVE-2026-10796
Published
Jun 4, 2026
Updated
Jun 4, 2026
Vendor
nvm-sh
Product
nvm
Classifications
CWE-78, T1059.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.40.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

nvm-sh · nvmversion=0 <=0.40.4

Published CVSS scores

7.5openjsCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
7.5openjsCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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