CVE-2026-109428 (GCVE-0-2026-109428)

Vulnerability from cvelistv5 – Published: 2026-10-13 18:17 – Updated: 2026-10-13 18:24 X_Open Source
VLAI
Title
Mistral Vibe < 2.25.5 Permission Bypass via Bash Line Continuation
Summary
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.
Severity
8.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
  • CWE-436 - Interpretation Conflict
Assigner
VulnCheck CNA under the mitre root
CNA scorecard B 84/100 over 6182 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
mistralai mistral-vibe Affected: 0 , < 2.25.5 (semver)
guessed Create a notification for this product.
Date Public
2026-09-18 00:00
Credits
Minqiang Gui
Show details on NVD website
To clipboard 

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          "url": "https://github.com/mistralai/mistral-vibe/releases/tag/v2.25.5"
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          "url": "https://github.com/mistralai/mistral-vibe/commit/c069ffa1e12fb5f2487b489217c40ab97721d553"
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}



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