CVE-2026-109428 — Mistral Vibe < 2.25.5 Permission Bypass via Bash Line Continuation
Mistral Vibe before 2.25.5 contains a permission validation bypass vulnerability that allows attackers to execute unauthorized commands by exploiting a parsing discrepancy betwe…
Published: 2026-10-13 · CVSS: 8.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7