CVE WatchOct 13, 2026

CVE-2026-109428

Mistral Vibe before 2.25.5 contains a permission validation bypass vulnerability that allows attackers to execute unauthorized commands by e

CVSS

8.8

High

EPSS

0.5%

p43

KEV

—

Exploit Today

0-100

Published: Oct 13, 2026 · Last modified: Oct 13, 2026 · CWE-436

EPSS · 30d

0.5%EPSS · 30 days0.5%

2026-10-142026-10-21

Technical description

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.

Official references

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