CVE-2026-87987

CVSS 10.0 (critical) · published 2026-09-11

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.

Weakness: CWE-15

Source: NVD CVE-2026-87987

References

• https://www.hiddenlayer.com/sai-security-advisory/2026-09-mistral-vibe5

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