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Critical · 9.3 CVE-2026-87984 EUVD-2026-76119GHSA-4vx3-rfqx-v945

An arbitrary file write vulnerability in Mistral Vibe, introduced in version 1.3.4, allows an attacker to create or overwrite files outside…

Published Sep 11, 2026 · Updated Sep 11, 2026 · Assigned by HiddenLayer

Description

An arbitrary file write vulnerability in Mistral Vibe, introduced in version 1.3.4, allows an attacker to create or overwrite files outside the active workspace without user approval. Shell redirection destinations are omitted from permission checks, enabling otherwise allowlisted commands to write to arbitrary paths accessible to the Vibe process.

Affected products

VendorProductAffectedFixed
mistralai mistral-vibe 1.3.4 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
openSUSE Tumbleweed mistral-vibe 2.25.4-1.1 openSUSE-SU-2026:11778-1

Advisories 1

References