Is there a public exploit for CVE-2026-121745?

No public exploit for CVE-2026-121745 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-2026-121745?

CVE-2026-121745 scores CVSS 2 (v4.0), rated low.

What does CVE-2026-121745 affect?

CVE-2026-121745 affects nvm-sh nvm.

2.0 Low

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

CVE-2026-121745

Node Version Manager (nvm) is a POSIX-compliant shell function for managing multiple node.js versions. In versions 0.40.0 through 0.40.8, when NVMAUTHHEADER is set, nvmdownload passes the credential to curl or wget as a --header "Authorization: ..." command-line argument. Process arguments are visible to every local user (on Linux via ps or /proc//cmdline unless /proc is mounted with hidepid=; on macOS via ps), so another unprivileged account on the same machine can read the token while nvm is downloading during nvm ls-remote, nvm install, and similar commands, and gain whatever access it grants on the private mirror. Only users who set NVMAUTHHEADER on a host shared with other local accounts are affected. Version 0.41.0 passes the header to curl on stdin and to GNU Wget in a private temporary config file. BusyBox wget reads no config file, so when it is the only downloader available the header is still passed as an argument.

Assessment

CVSS: 2 (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:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

At the source

EUVD (ENISA)

References

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