CVE-2026-109428 Mistral Vibe - Broken Access Control

Mistral Vibe < 2.25.5 contains a permission validation bypass caused by parsing discrepancies between tree-sitter-bash and bash in _extract_commands() function, letting attackers execute unauthorized arbitrary commands, exploit requires crafted command strings.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.51% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Remote Code Execution
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Published
13 October 2026
Updated
15 October 2026
Weakness
CWE-436

Vendor fix

Update to version 2.25.5 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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