What’s Vulnerable › Vulnerabilities

CVE-2026-67623: Mistral Vibe < 2.23.3 Arbitrary Command Execution via git fsmonitor Hook

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-05 · updated 2026-10-23
• Weakness: CWE-829

Description

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.

Affected products

• mistralai mistral-vibe: before 2.23.3 — fixed in 2.23.3

How to fix

Upgrade to a fixed version: mistralai mistral-vibe 2.23.3. Check the vendor advisory for mitigations.

References

• https://github.com/mistralai/mistral-vibe/commit/68ff32e6a92e80a874c8153312f0aa8ae4955477
• https://github.com/mistralai/mistral-vibe/issues/942
• https://github.com/mistralai/mistral-vibe/pull/962
• https://github.com/mistralai/mistral-vibe/pull/978
• https://github.com/mistralai/mistral-vibe/releases/tag/v2.23.3
• https://therealcoiffeur.com/c111011.html
• https://www.vulncheck.com/advisories/mistral-vibe-arbitrary-command-execution-via-git-fsmonitor-hook
• https://github.com/mistralai/mistral-vibe/issues/942

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