CVE-2026-87986 - Vulnerability Details - OpenCVE

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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact High

Subsequent System Integrity Impact High

Subsequent System Availability Impact High

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

mistralai

mistral-vibe

unaffected

Version	Status	Constraints
`1.3.4`	affected	≤ *

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://www.hiddenlayer.com/sai-security-advisory/2026-09-mistral-vibe4

History

Fri, 11 Sep 2026 14:45:00 +0000

Type	Values Removed	Values Added
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.
Weaknesses		CWE-228
References		https://www.hiddenlayer.com/sai-security-advisory/2026-09-mistral-vibe4
Metrics		cvssV4_0 `{'score': 10, 'vector': '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'}`

Projects

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MITRE

Status: PUBLISHED

Assigner: HiddenLayer

Published: 2026-09-11T14:31:20.859Z

Updated: 2026-09-11T14:57:01.512Z

Reserved: 2026-09-09T19:14:18.451Z

Link: CVE-2026-87986

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-09-11T15:17:07.653

Modified: 2026-09-11T15:17:07.653

Link: CVE-2026-87986

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-228

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