CVE-2026-87987: CWE-15 External control of system or configuration setting in mistralai mistral-vibe
An arbitrary code execution vulnerability in Mistral Vibe allows an attacker to bypass command permission checks using environment variable assignments preceding allowlisted commands. These assignments are excluded from inspection, enabling attacker-controlled environment variables to cause arbitrary code execution without user approval.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-87987) in Mistral Vibe involves CWE-15 (External Control of System or Configuration Setting). Attackers can prepend environment variable assignments to allowlisted commands, which are excluded from permission checks. This bypass allows attacker-controlled environment variables to trigger arbitrary code execution. The vulnerability affects versions >=2.6.0. It has a CVSS 4.0 score of 10.0, indicating critical severity with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation results in arbitrary code execution without requiring user interaction or privileges, allowing full compromise of the affected system. The vulnerability bypasses command permission checks, making it highly dangerous and enabling attackers to execute malicious code remotely.
Mitigation Recommendations
No patch or official fix information is provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to vulnerable versions and monitor for suspicious activity related to environment variable manipulation in command executions.
CVE-2026-87987: CWE-15 External control of system or configuration setting in mistralai mistral-vibe
Description
An arbitrary code execution vulnerability in Mistral Vibe allows an attacker to bypass command permission checks using environment variable assignments preceding allowlisted commands. These assignments are excluded from inspection, enabling attacker-controlled environment variables to cause arbitrary code execution without user approval.
CVSS v4.0
Score 10.0critical
Affected software
mistralai
mistral-vibe
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-87987) in Mistral Vibe involves CWE-15 (External Control of System or Configuration Setting). Attackers can prepend environment variable assignments to allowlisted commands, which are excluded from permission checks. This bypass allows attacker-controlled environment variables to trigger arbitrary code execution. The vulnerability affects versions >=2.6.0. It has a CVSS 4.0 score of 10.0, indicating critical severity with network attack vector, no required privileges or user interaction, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation results in arbitrary code execution without requiring user interaction or privileges, allowing full compromise of the affected system. The vulnerability bypasses command permission checks, making it highly dangerous and enabling attackers to execute malicious code remotely.
Mitigation Recommendations
No patch or official fix information is provided. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, restrict access to vulnerable versions and monitor for suspicious activity related to environment variable manipulation in command executions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- HiddenLayer
- Date Reserved
- 2026-09-09T19:14:18.451Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa4149991cc7f38484bd9b1
Added to database: 09/11/2026, 14:47:53 UTC
Last enriched: 09/11/2026, 15:01:54 UTC
Last updated: 09/11/2026, 16:30:20 UTC
Views: 4
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