PT-2026-89889 · Mistralai · Mistral-Vibe

CVE-2026-87987

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Published

2026-09-11

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Updated

2026-09-11

CVSS v4.0

10

Critical

VectorAV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
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.

Fix

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Weakness Enumeration

Related Identifiers

CVE-2026-87987

Affected Products

Mistral-Vibe