CVE-2026-87988

Unrestricted File Access via Unvalidated Commands in Mistral Vibe

Published Sep 11, 2026 CVSS 4.0 · 10 Critical EPSS < 1% KEV · Not listed
Description
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.

Analysis

AI-generated

Technical impact

An arbitrary file access vulnerability in Mistral Vibe allows attackers to bypass workspace restrictions by invoking commands that are categorized as unconditionally allowed. The missing path validation for these commands grants the ability to reference files outside the intended workspace without user approval, potentially exposing sensitive data or corrupting critical files. This flaw directly maps to improper permission checks and can enable a compromised user to read or modify protected files, threatening confidentiality and integrity.

Affected Systems

The affected product is Mistral Vibe from Mistralai. No specific version information was provided in the advisory, so the vulnerability may exist in any currently supported release of this product.

Risk and Exploitability

The CVSS base score is 10, indicating a critical impact. An EPSS score is not available, and the vulnerability is not listed in the CISA KEV catalog. Based on the description, the likely attack requires authenticated access to the service to issue the vulnerable commands, but the lack of path validation makes it exploitable once such access is gained.

Remediation

No solution or workaround provided in the CVE record.

OpenCVE Recommended Actions

  • Apply the vendor‑released patch or upgrade to the latest Mistral Vibe release as soon as it is available.
  • Restrict or disable the unconditionally allowed commands that lack path validation, or reconfigure them to enforce strict path controls.
  • Monitor application logs for unexpected file access attempts, and consider implementing filesystem isolation or sandboxing to contain potential leakage.

Generated by OpenCVE AI on September 11, 2026 at 16:06 UTC.

Tracking

Sign in to view the affected projects.

Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Mistral
Mistral mistral-vibe
Vendors & Products Mistral
Mistral mistral-vibe
Type Values Removed Values Added
Title Unrestricted File Access via Unvalidated Commands in Mistral Vibe
Metrics ssvc

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

Type Values Removed Values Added
Description 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.
Weaknesses CWE-732
References
Metrics cvssV4_0

{'score': 10, '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'}

Weaknesses
  • CWE-732

    Incorrect Permission Assignment for Critical Resource

Sources

Status
PUBLISHED
Assigner
HiddenLayer
Published
Updated
Sep 11, 2026, 3:00 PM
Reserved
Sep 9, 2026, 7:14 PM
Status
Deferred
Published
Sep 11, 2026, 3:17 PM
Modified
Sep 11, 2026, 5:35 PM