Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

CVE-2026-35020

Gravedad CVSS v4.0:
ALTA
Tipo:
CWE-78 Neutralización incorrecta de elementos especiales usados en un comando de sistema operativo (Inyección de comando de sistema operativo)
Fecha de publicación:
06/04/2026
Última modificación:
07/04/2026

Descripción

*** Pendiente de traducción *** Anthropic Claude Code CLI and Claude Agent SDK contain an OS command injection vulnerability in the command lookup helper and deep-link terminal launcher that allows local attackers to execute arbitrary commands by manipulating the TERMINAL environment variable. Attackers can inject shell metacharacters into the TERMINAL variable which are interpreted by /bin/sh when the command lookup helper constructs and executes shell commands with shell=true. The vulnerability can be triggered during normal CLI execution as well as via the deep-link handler path, resulting in arbitrary command execution with the privileges of the user running the CLI.