CVE-2026-57998

better-npm-audit through 3.11.0, and the 4.0.0-rc.2 prerelease, builds its npm audit command by interpolating the user-supplied --registry option into a command string in src/handlers/handleInput.ts without validation or quoting, then passes that string to child_process.exec() in index.ts, which spawns a shell. A registry value containing shell metacharacters such as a semicolon, pipe, or command substitution executes arbitrary operating system commands with the privileges of the process running the audit.

CVSS v3 7.8 HIGH

7.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/jeemok/better-npm-audit
https://github.com/jeemok/better-npm-audit/blob/fd99a0f41ff4342b8a0a6fdbe5a17261de3d0544/index.ts#L34
https://github.com/jeemok/better-npm-audit/blob/fd99a0f41ff4342b8a0a6fdbe5a17261de3d0544/src/handlers/handleInput.ts#L30-L37
https://github.com/jeemok/better-npm-audit/issues/119
https://github.com/jeemok/better-npm-audit/pull/120
https://www.vulncheck.com/advisories/better-npm-audit-os-command-injection-via-registry-flag
https://github.com/jeemok/better-npm-audit/issues/119

Configurations

No configuration.

History

12 Oct 2026, 16:10

Type	Values Removed	Values Added
Summary		(es) better-npm-audit hasta la 3.11.0, y la versión preliminar 4.0.0-rc.2, construye su comando npm audit interpolando la opción --registry proporcionada por el usuario en una cadena de comando en src/hylers/hyleInput.ts sin validación ni entrecomillado, luego pasa esa cadena a child_process.exec() en index.ts, lo que genera un shell. Un valor de registro que contiene metacaracteres de shell como un punto y coma, una tubería o una sustitución de comando ejecuta comandos arbitrarios del sistema operativo con los privilegios del proceso que ejecuta la auditoría.

Information

Published : 2026-08-22 13:16

Updated : 2026-10-12 16:10

NVD link : CVE-2026-57998

Mitre link : CVE-2026-57998

CVE.ORG link : CVE-2026-57998

JSON object : View

Products Affected

No product.

CWE

CWE-78

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

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A registry value containing shell metacharacters such as a semicolon, pipe, or command substitution executes arbitrary operating system commands with the privileges of the process running the audit."}, {"lang": "es", "value": "better-npm-audit hasta la 3.11.0, y la versi\u00f3n preliminar 4.0.0-rc.2, construye su comando npm audit interpolando la opci\u00f3n --registry proporcionada por el usuario en una cadena de comando en src/hylers/hyleInput.ts sin validaci\u00f3n ni entrecomillado, luego pasa esa cadena a child_process.exec() en index.ts, lo que genera un shell. Un valor de registro que contiene metacaracteres de shell como un punto y coma, una tuber\u00eda o una sustituci\u00f3n de comando ejecuta comandos arbitrarios del sistema operativo con los privilegios del proceso que ejecuta la auditor\u00eda."}], "lastModified": "2026-10-12T16:10:00.220", "sourceIdentifier": "disclosure@vulncheck.com"}