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Back to active CVEs
Low · CVSS 2.0CVE-2026-121745

nvm exposes NVM_AUTH_HEADER to other local users on the curl/wget command lineCVE-2026-121745

Answer in brief

CVE-2026-121745 records a Low severity (CVSS 2.0) vulnerability in nvm exposes NVM_AUTH_HEADER to other local users on the curl/wget command line. The current sources do not mark it as known exploited. The current feed maps nvm-sh/nvm (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 4, 2026Updated Nov 4, 2026Source checked Nov 4, 2026First seen by HOL Nov 4, 2026Material review Nov 4, 2026
Upstream Advisory

Key facts

Risk
Low · CVSS 2.0
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 2.0. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps nvm-sh/nvm (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
nvm-sh/nvmgeneric>=0.40.0 <0.41.00.41.0

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for nvm-sh/nvm.
  2. 2Review the reported fix. Source-reported solution: Upgrade to nvm 0.41.0 or later, and on a machine shared with other local users make sure curl or GNU Wget is installed (BusyBox wget still receives the header as an argument).

Evidence timeline and material changes

  1. Published upstream

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 4, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • GitHub security advisorygithub.com
Upstream source description

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 `NVM_AUTH_HEADER` is set, `nvm_download` 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 `NVM_AUTH_HEADER` 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.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • nvm use --save and nvm install --save write through a symlinked .nvmrc, overwriting any file the user can writeSame nvm-sh/nvm package
  • nvm prints the contents of any readable file through a symlinked .nvmrcSame nvm-sh/nvm package
  • nvm use --delete-prefix lets a project .npmrc choose which file npm rewrites or makes world-writableSame nvm-sh/nvm package
  • nvm passes the version pattern to grep without -e, letting a .nvmrc inject grep options and read local filesSame nvm-sh/nvm package

Record context

Vulnerability class
Secret Exfiltration
EPSS
Not reported
CWE IDs
CWE-214
Source
CVE List V5
Source checked
Nov 4, 2026
References
2 linked sources
Open source record