nvm exposes NVM_AUTH_HEADER to other local users on the curl/wget command line
CVSS score
2.0
EPSS probability
—
Risk score
0.2
Published
4 h ago
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Vulnerability description
DayBreach AI Explanation
Verified against sourcesSources read
2
Source agreement
0/2
Evidence confidence
%47
Short explanation
Node Version Manager (nvm) versions 0.40.0 through 0.40.8 pass credentials as command-line arguments when NVM_AUTH_HEADER is set, allowing other local users to read secret tokens.
On shared hosts, authentication tokens can be read from process lists, granting unauthorized access to private mirrors.
What should be done?
- Update to version 0.41.0 or later
- Follow vendor advisories if an immediate update is not possible
- Carefully manage NVM_AUTH_HEADER usage on shared hosts
2 alanda kaynak uyuşmazlığı var. DayBreach bu değerleri saklamadı; kaynak karşılaştırması aşağıda gösteriliyor.
Chain of evidence and sources
0.40.0 ile 0.40.8 sürümleri arasındaki nvm, NVM_AUTH_HEADER değerini komut satırı argümanı olarak geçirir.
Yerel kullanıcılar süreç argümanlarını ps veya /proc üzerinden okuyabilir.
Show the technical text from the sources
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.
CVSS vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CWE: CWE-214
This explanation was compiled automatically from the source records. Scores, active exploitation, patch and exploit status come straight from the sources.
IMPACT: Affected Products and Software
Affected Products
The following products are affected by CVE-2026-121745 vulnerability. Where our threat engine knows the exact affected versions, they are listed below.
| ID | VENDOR | PRODUCT | ACTION |
|---|---|---|---|
| 1 | nvm-sh | nvm | View |
RED HAT CSAF/VEX: Product Impact Check
SCORING: CVSS from Multiple Sources
CVSS Scores
The Common Vulnerability Scoring System is a standardised framework for assessing the severity of vulnerabilities in software and systems. We collect and display CVSS scores from several sources for each CVE.
| SCORE | VERSION | SEVERITY | VECTOR | SOURCE |
|---|---|---|---|---|
| 2.5 | CVSS V3_1 | LOW | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N | CVE CNA |
| 2.5 | CVSS V31 | LOW | CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N | NVD |
| 2.0 | CVSS V4_0 | LOW | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N | CVE CNA |
| 2.0 | CVSS V40 | LOW | CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD |
Patch and Remediation Guide
Solution & Remediation Advisory
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Public exploit and active exploitation status
Verified exploit intelligence
No verified public PoC, exploit repository or Metasploit module has been found for this CVE yet.
Weakness Classification and Attack Patterns (CWE & CAPEC)
CWE - Common Weakness Enumeration
While CVE identifies specific instances of vulnerabilities, CWE categorises the common flaws or weaknesses that can lead to vulnerabilities. CVE-2026-121745 is associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2026-121745 weaknesses.
Attack Vector and Accessibility
Official Sources and Advisories
Similar Vulnerabilities
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