Description
An arbitrary file read vulnerability in Mistral Vibe, introduced in version 2.6.0, allows an attacker to bypass workspace restrictions using quoted absolute paths in allowlisted shell commands. Improper handling of quotation marks during path validation enables files outside the active workspace to be read without user approval.
Published: 2026-09-11
Score: 9.2 Critical
EPSS: n/a
KEV: No
Impact: arbitrary file read leading to unauthorized disclosure of files outside the workspace
Action: Immediate patch
AI Analysis

Impact

An attacker can use quoted absolute paths in allowlisted shell commands to read any file on the system, bypassing workspace restrictions. This flaw allows the disclosure of sensitive data, excluding user authorization. The weakness corresponds to path traversal (CWE-22).

Affected Systems

Mistral Vibe 2.6.0 and subsequent builds that have not applied the vendor fix. The issue is present in all installations of the affected version regardless of deployment scenario.

Risk and Exploitability

The CVSS score of 9.2 reflects a severe confidentiality impact. The EPSS score is not available, making the exact exploitation probability hard to quantify; however, the lack of input sanitization makes this a straightforward local attack. The vulnerability is not listed in CISA’s KEV catalog. An attacker with local access to the workspace or compromised shell command, which is typical in many operational contexts, can readily exploit this flaw.

Generated by OpenCVE AI on September 11, 2026 at 16:09 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Apply the latest patch or upgrade to a version of Mistral Vibe that addresses the path validation issue.
  • Disable or limit the use of quoted absolute paths in allowlisted shell commands until a patch is available.
  • Enforce stricter file system permissions so that users of the application are restricted to their workspace directories, mitigating the impact of any remaining path traversal attempts.

Generated by OpenCVE AI on September 11, 2026 at 16:09 UTC.

Tracking

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Advisories

No advisories yet.

History

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

Type Values Removed Values Added
Title Arbitrary File Read via Quoted Absolute Paths in Mistral Vibe 2.6.0
Metrics ssvc

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


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

Type Values Removed Values Added
Description An arbitrary file read vulnerability in Mistral Vibe, introduced in version 2.6.0, allows an attacker to bypass workspace restrictions using quoted absolute paths in allowlisted shell commands. Improper handling of quotation marks during path validation enables files outside the active workspace to be read without user approval.
Weaknesses CWE-22
References
Metrics cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: HiddenLayer

Published:

Updated: 2026-09-11T14:57:02.035Z

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

Link: CVE-2026-87983

cve-icon Vulnrichment

Updated: 2026-09-11T14:55:08.917Z

cve-icon NVD

Status : Deferred

Published: 2026-09-11T15:17:07.240

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

Link: CVE-2026-87983

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-11T16:15:05Z

Weaknesses
  • CWE-22

    Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')