Is there a public exploit for CVE-2026-121750?

No public exploit for CVE-2026-121750 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-121750?

CVE-2026-121750 scores CVSS 2.1 (v4.0), rated low.

What does CVE-2026-121750 affect?

CVE-2026-121750 affects nvm-sh nvm.

2.1 Low

Node Version Manager (nvm) is a POSIX-compliant shell function for managing multiple node.js versions.

CVE-2026-121750

Node Version Manager (nvm) is a POSIX-compliant shell function for managing multiple node.js versions. In versions 0.40.5 through 0.40.8, nvmdownloadartifact downloads a release archive directly to its final path in $NVMDIR/.cache and verifies its checksum afterwards; on a checksum mismatch it reports an error but leaves the rejected archive in place. A later nvm install --offline of the same version installs that cached file without a checksum, so an archive that was just rejected gets installed and its node and npm run. This gives code execution to a party who can alter the downloaded tarball (for example a poisoned CDN or cache object) but cannot also forge the SHASUMS256.txt beside it, if the victim runs nvm install --offline for that version after the visible "Checksums do not match" failure and before any online retry. Version 0.41.0 only puts an archive in the cache once its checksum has passed.

Assessment

CVSS: 2.1 (v4.0)
Severity: Low
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 4 November 2026
Last updated: 4 November 2026
Affected: nvm-sh · nvm
Assigner: harborist

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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