CVE-2026-87988 PUBLISHED

Assigner: HiddenLayer
Reserved: 09.09.2026 Published: 11.09.2026 Updated: 11.09.2026

An arbitrary file access vulnerability in Mistral Vibe allows an attacker to bypass workspace restrictions through commands classified as unconditionally allowed. Missing path validation for these commands enables access to files outside the active workspace without user approval.

Metrics

CVSS 4.0

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
CVSS Score: 10

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	High
Attack Complexity	Low	Integrity	High	Integrity	High
Attack Requirements	None	Availability	High	Availability	High
Privileges Required	None
User Interaction	None

CVSS 4.0

Product Status

Vendor	mistralai
Product	mistral-vibe
Versions	Default: unaffected affected from 2.15.0 to * (incl.)

References

https://www.hiddenlayer.com/sai-security-advisory/2026-09-mistral-vibe6

Problem Types

CWE-732: Incorrect Permission Assignment for Critical Resource CWE

Impacts

CAPEC-180 Exploiting Incorrectly Configured Access Control Security Levels