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CVE-2026-122134: Mistral Vibe Security Vulnerability

CVE-2026-122134 explained: high Security Vulnerability in Mistral Vibe. CVSS 8.6. Affected versions, detection, fixes and CTEM priority.

Last updated: Nov 4, 2026

CVSS
8.6 HIGH
EPSS
n/a
CISA KEV
Not listed
CWE
CWE-829

Sources: National Vulnerability Database, CVE.org, CISA KEV, FIRST EPSS

CVE-2026-122134 Overview

Mistral Vibe before 2.25.7 contains a remote code execution vulnerability that allows attackers to run commands by configuring malicious Git clean or process filter drivers in a repository. When a user opens a crafted repository, ProjectContextProvider._fetch_git_status runs git status at startup, invoking the filters and executing commands with user privileges before any trust prompt.

Critical Impact

Remote, unauthenticated attackers who persuade a user to act can exploit this Security Vulnerability in Mistral Vibe. The CVSS base score is 8.6 (High).

Affected Products

  • Mistral Vibe: see the vendor advisory for the exact affected versions

Discovery Timeline

  • 2026-11-04: CVE-2026-122134 published to the National Vulnerability Database by disclosure@vulncheck.com
  • 2026-11-04: last updated in the NVD database

Technical Details for CVE-2026-122134

Vulnerability Analysis

CVE-2026-122134 is a Security Vulnerability weakness (CWE-829) in Mistral Vibe. Based on its CVSS vector, the flaw can be reached over the network, needs no login, and relies on a user taking an action.

With a CVSS base score of 8.6, apply the vendor fix and confirm exposure on internet facing and business critical assets first.

Root Cause

The vendor description states: Mistral Vibe before 2.25.7 contains a remote code execution vulnerability that allows attackers to run commands by configuring malicious Git clean or process filter drivers in a repository. When a user opens a crafted repository, ProjectContextProvider._fetch_git_status runs git status at startup, invoking the filters and executing commands with user privileges before any trust prompt.

Attack Vector

Based on the CVSS vector, the flaw can be reached over the network, needs no login, and relies on a user taking an action. Attack complexity is low complexity.

No exploitation in the wild is confirmed by CISA at the time of the last update. Check the references below for any vendor or researcher proof of concept.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Detection Methods for CVE-2026-122134

Detection Strategies

  • Inventory every instance of Mistral Vibe and compare the running version with the affected range above.
  • Check external attack surface scans for internet facing instances of the component.
  • Run an authenticated vulnerability scan once your scanner ships a check for this CVE.

Monitoring Recommendations

  • Forward Mistral Vibe application, access and audit logs to your SIEM for retrospective hunting.
  • Alert on new processes, configuration changes or outbound connections from the affected service.
  • Track the vendor advisory and the CISA KEV catalog for changes in exploitation status.

How to Mitigate CVE-2026-122134

Immediate Actions Required

  • Apply the fixed version of Mistral Vibe named in the vendor advisory.
  • Prioritize internet facing and business critical instances first.
  • Rescan after the change to confirm the exposure is closed.

Patch Information

Use the fixed version listed in the vendor advisory for Mistral Vibe.

Workarounds

  • If patching must wait, restrict network access to the affected service and place it behind authentication or a web application firewall rule.

CWE References

Technical References

This entry is built directly from NVD, CISA KEV and EPSS data. Verify fixed versions in the vendor advisory before you deploy.

Frequently asked questions

CVE-2026-122134 is a high severity Security Vulnerability in Mistral Vibe with a CVSS score of 8.6. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.

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