CVE-2026-109429 Mistral Vibe - Command Injection

Mistral Vibe < 2.25.4 contains a command permission gate bypass caused by hidden command substitution inside single-quoted variable undetected by tree-sitter-bash static parsing, letting attackers execute arbitrary commands with agent terminal privileges, exploit requires crafted input with bash promptvars feature.

CVSS base score 8.8 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.56% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Command Injection
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 2.25.4 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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