CVE-2026-87986
Received Received - Intake

Arbitrary Code Execution in Mistral Vibe via Shell Construct Bypass

Publication date: 2026-09-11

Last updated on: 2026-09-11

Assigner: HiddenLayer

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.

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Meta Information

Published
2026-09-11
Last Modified
2026-09-11
Generated
2026-09-11
AI Q&A
2026-09-11
EPSS Evaluated
N/A
NVD
CVE-2026-87986
EUVD
EUVD-2026-76121

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mistral vibe *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-228 The product does not handle or incorrectly handles input that is not syntactically well-formed with respect to the associated specification.

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Executive Summary

This vulnerability allows arbitrary code execution in Mistral Vibe by bypassing command permission checks. Attackers exploit shell constructs that the parser cannot interpret, causing unparsed portions to be omitted from inspection. This enables embedded commands to run on the user's system without approval.

Impact Analysis

An attacker could execute malicious commands on your system without your knowledge or consent. This could lead to unauthorized access, data theft, system compromise, or further attacks within your environment.

Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Non-compliance risks include fines, legal penalties, and reputational damage.

Mitigation Strategies

Update Mistral Vibe to the latest patched version immediately to address the arbitrary code execution flaw. Disable or restrict shell command parsing in Mistral Vibe configurations to prevent bypass of permission checks.

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