CVE-2026-87983

Arbitrary File Read via Quoted Absolute Paths in Mistral Vibe 2.6.0

Published Sep 11, 2026 CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
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.

Analysis

AI-generated

Technical 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.

Remediation

No solution or workaround provided in the CVE record.

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 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 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'}

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'}

Weaknesses
  • CWE-22

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

Sources

Status
PUBLISHED
Assigner
HiddenLayer
Published
Updated
Sep 11, 2026, 2:57 PM
Reserved
Sep 9, 2026, 7:14 PM
Status
Deferred
Published
Sep 11, 2026, 3:17 PM
Modified
Sep 11, 2026, 5:35 PM