CVE-2026-67623Public exploitNetwork attack vector

Command execution via repository-controlled fsmonitor hook

Published Aug 5, 2026 · Updated Aug 5, 2026

Remote code execution in Mistral AI Mistral Vibe before 2.23.3 allows attackers to execute commands through a crafted repository. ProjectContextProvider._run_git invokes git status --porcelain without overriding repository-controlled core.fsmonitor, so Git launches the helper named in .git/config. Execution occurs when a user runs any Vibe command inside the crafted repository, before the trust dialog, and grants the payload that user's privileges.

CVSS severity8.6
High
EPSS probability0.53%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Remote code execution in Mistral AI Mistral Vibe before 2.23.3 allows attackers to execute commands through a crafted repository. ProjectContextProvider._run_git invokes git status --porcelain without overriding repository-controlled core.fsmonitor, so Git launches the helper named in .git/config. Execution occurs when a user runs any Vibe command inside the crafted repository, before the trust dialog, and grants the payload that user's privileges.

The record

CVE
CVE-2026-67623
Published
Aug 5, 2026
Updated
Aug 5, 2026
Vendor
Mistral AI
Product
Mistral Vibe
Classifications
CWE-829, T1204.002
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 5, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2.23.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Mistral AI · Mistral Vibeversion=0 <2.23.3

Published CVSS scores

8.6VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
8.1Upstream vulnerability reporterCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:W/RC:C
8.8VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-829Inclusion of Functionality from Untrusted Control Sphere
T1204.002Malicious File

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo