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.
History

Sun, 13 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
First Time appeared Mistral
Mistral mistral-vibe
Vendors & Products Mistral
Mistral mistral-vibe

Fri, 11 Sep 2026 16:30:00 +0000

Type Values Removed Values Added
Title Arbitrary File Write via Shell Redirection in Mistral Vibe
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Fri, 11 Sep 2026 14:45:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-22
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: HiddenLayer

Published: 2026-09-11T14:24:58.744Z

Updated: 2026-09-11T14:57:01.844Z

Reserved: 2026-09-09T19:14:18.451Z

Link: CVE-2026-87984

cve-icon Vulnrichment

Updated: 2026-09-11T14:55:06.961Z

cve-icon NVD

Status : Deferred

Published: 2026-09-11T15:17:07.383

Modified: 2026-09-11T17:35:21.440

Link: CVE-2026-87984

cve-icon Redhat

No data.