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CVE-2026-109428

Mistral Vibe < 2.25.5 Permission Bypass via Bash Line Continuation PUBLISHED

Description (CNA)

Mistral Vibe before 2.25.5 contains a permission validation bypass vulnerability that allows attackers to execute unauthorized commands by exploiting a parsing discrepancy between tree-sitter-bash and bash in handling backslash-newline line continuations in the _extract_commands() function of bash.py. Attackers can craft a command string where tree-sitter-bash extracts only an allowlisted prefix such as cd while bash joins the line continuation into a materially different and hidden command such as a curl request, causing resolve_permission to grant ALWAYS permission while bash executes unauthorized arbitrary commands.

Affected (CNA)

Vendor / productVersions
mistralai / mistral-vibeaffected 0 before 2.25.5

CWE

CWE-436

References