CVE-2026-67623

HIGH 8.8

Mistral Vibe < 2.23.3 Arbitrary Command Execution via git fsmonitor Hook

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

Mistral Vibe before 2.23.3 contains a remote code execution vulnerability that allows attackers to execute arbitrary commands by embedding a malicious core.fsmonitor hook in a repository's .git/config file, which is triggered when vibe invokes git status --porcelain without suppressing hook execution. Attackers can distribute or create a crafted repository containing a malicious fsmonitor entry to achieve arbitrary command execution with the victim's full privileges when any vibe command is run inside that repository.

CWE	CWE-829
Vendor	mistralai
Product	mistral-vibe
Published	Aug 5, 2026
Last Updated	Aug 5, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

mistralai / mistral-vibe

0 < 2.23.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/mistralai/mistral-vibe/releases/tag/v2.23.3 github.com: https://github.com/mistralai/mistral-vibe/issues/942 github.com: https://github.com/mistralai/mistral-vibe/pull/962 github.com: https://github.com/mistralai/mistral-vibe/pull/978 github.com: https://github.com/mistralai/mistral-vibe/commit/68ff32e6a92e80a874c8153312f0aa8ae4955477 vulncheck.com: https://www.vulncheck.com/advisories/mistral-vibe-arbitrary-command-execution-via-git-fsmonitor-hook

Credits

Mathieu Farrell