CVE-2026-77474: fallo de gravedad alta en Dicklesworthstone destructive_command_guard
dcg: Exponential-time command-substitution preprocessing lets a crafted command hang dcg and bypass the guard via hook-timeout fail-open
Publicada el · Actualizada el
Aviso por correo cuando entre en el KEV, tenga PoC pública o suba de nota.
21Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 7.1epss 0.1%
destructive_command_guard (dcg) is a command-line safety tool that blocks destructive shell commands before AI coding agents run them. Prior to 0.6.6, nested or unclosed substitutions are recursively rescanned after an inner scan returns unterminated, producing exponential-time work. The affected scanners are reached through split_command_segments in src/packs/mod.rs. a destructive command followed by nested or unclosed $( or $(( sequences. nested or unclosed $( and $(( sequences cause repeated rescanning of the remaining command suffix. a hung PreToolUse hook fails open, allowing the destructive command to proceed. This issue is fixed in version 0.6.6.
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Productos afectados
Dicklesworthstone · destructive_command_guardReferencias
https://github.com/Dicklesworthstone/destructive_command_guard/commit/ba16bdd074b045329dc0ca6ec9a08c44403cfe1bhttps://github.com/Dicklesworthstone/destructive_command_guard/issues/189https://github.com/Dicklesworthstone/destructive_command_guard/releases/tag/v0.6.6https://github.com/Dicklesworthstone/destructive_command_guard/security/advisories/GHSA-4cfr-w3v5-w5j5