What is GHSA-8555-f52w-mpcf?

GHSA-8555-f52w-mpcf is a security advisory published by GitHub Security Advisories with Critical severity. An arbitrary code execution vulnerability in Mistral Vibe allows an attacker to bypass command...

Which CVE IDs does GHSA-8555-f52w-mpcf cover?

GHSA-8555-f52w-mpcf covers the following CVE IDs: CVE-2026-87985. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-8555-f52w-mpcfCritical

An arbitrary code execution vulnerability in Mistral Vibe allows an attacker to bypass command...

Vendor

GitHub Security Advisories

Published

September 11, 2026

Last Modified

September 11, 2026

🔗 CVE IDs covered (1)

CVE-2026-87985 →

📋 Description

An arbitrary code execution vulnerability in Mistral Vibe allows an attacker to bypass command permission checks using ANSI-C quoted arguments. These arguments are not properly inspected, enabling a crafted allowlisted command to execute arbitrary code on the user's system without approval.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-87985
https://www.hiddenlayer.com/sai-security-advisory/2026-09-mistral-vibe3
https://github.com/advisories/GHSA-8555-f52w-mpcf