CVE-2026-121749: nvm · Argument Injection
Affects nvmSource CVE Database V5
Not known to be exploited · CVSS 4.6 Medium : upgrade to 0.41.0 when convenient.
Data as of 5 Nov 2026, 00:16 UTC
Thin evidence
One scorer or none| CNA (harborist) | CVSS 4.0 | 4.6 |
|---|---|---|
| CNA (harborist) | CVSS 3.1 | 3.3 |
- Patch
- Available – fixed in 0.41.0
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:NExploitation evidence
Disclosed: evidence found.
CVE published 4 Nov 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Upgrade nvm to 0.41.0.
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| nvm-shnvm | Affected
| Fixed in
|
GitHubnvmpkg:github/nvmOther threats | Affected
| Fixed in
|
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Upgrade nvm to version 0.41.0 or later, where the vulnerability is fixed by passing version patterns to grep with the '-e' option. No other mitigation is required as the fix addresses the root cause. Users should avoid using vulnerable versions and ensure .nvmrc files are from trusted sources.
Description
Node Version Manager (nvm) versions 0.5.0 through 0.40.8 contain an argument injection vulnerability (CWE-88) where version patterns from a .nvmrc file starting with '-' are interpreted as grep options. This causes unintended recursive directory searches, potentially leaking sensitive data such as npm tokens from symlinked files to terminal output and logs. The issue is fixed in version 0.41.0 by passing version patterns to grep with the '-e' option.