# CVE-2026-87986

## Summary

- **CVE ID:** CVE-2026-87986
- **Severity:** CRITICAL
- **CVSS Score:** 10 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H)
- **CWE:** CWE-228
- **Published:** Sep 11, 2026
- **Last Modified:** Sep 11, 2026

## Description

An arbitrary code execution vulnerability in Mistral Vibe allows an attacker to bypass command permission checks using shell constructs it's parser cannot interpret. Unparsed portions are omitted from inspection, enabling embedded commands to execute on the user's system without approval.

## Affected Products

- mistralai — mistral-vibe (1.3.4)

## References

- [CNA](https://www.hiddenlayer.com/sai-security-advisory/2026-09-mistral-vibe4)

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._