Vulnerability-Lookup

GHSA-G6FR-W8C4-4935

Vulnerability from github – Published: 2026-08-05 15:32 – Updated: 2026-08-06 15:32

Details

Mistral Vibe before 2.23.3 contains a remote code execution vulnerability that allows attackers to execute arbitrary commands by embedding a malicious core.fsmonitor hook in a repository's .git/config file, which is triggered when vibe invokes git status --porcelain without suppressing hook execution. Attackers can distribute or create a crafted repository containing a malicious fsmonitor entry to achieve arbitrary command execution with the victim's full privileges when any vibe command is run inside that repository.

Severity

8.8 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

8.6 (High)


                  
                    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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-67623"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-829"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-05T14:17:10Z",
    "severity": "HIGH"
  },
  "details": "Mistral Vibe before 2.23.3 contains a remote code execution vulnerability that allows attackers to execute arbitrary commands by embedding a malicious core.fsmonitor hook in a repository\u0027s .git/config file, which is triggered when vibe invokes git status --porcelain without suppressing hook execution. Attackers can distribute or create a crafted repository containing a malicious fsmonitor entry to achieve arbitrary command execution with the victim\u0027s full privileges when any vibe command is run inside that repository.",
  "id": "GHSA-g6fr-w8c4-4935",
  "modified": "2026-08-06T15:32:32Z",
  "published": "2026-08-05T15:32:22Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-67623"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mistralai/mistral-vibe/issues/942"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mistralai/mistral-vibe/pull/962"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mistralai/mistral-vibe/pull/978"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mistralai/mistral-vibe/commit/68ff32e6a92e80a874c8153312f0aa8ae4955477"
    },
    {
      "type": "WEB",
      "url": "https://github.com/mistralai/mistral-vibe/releases/tag/v2.23.3"
    },
    {
      "type": "WEB",
      "url": "https://therealcoiffeur.com/c111011.html"
    },
    {
      "type": "WEB",
      "url": "https://www.vulncheck.com/advisories/mistral-vibe-arbitrary-command-execution-via-git-fsmonitor-hook"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-67623 (GCVE-0-2026-67623)

Vulnerability from cvelistv5 – Published: 2026-08-05 13:27 – Updated: 2026-08-06 12:35 X_Open Source

Title

Mistral Vibe < 2.23.3 Arbitrary Command Execution via git fsmonitor Hook

Summary

Severity

8.6 (High)


                        
                          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

8.8 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-05 14:27 UTC

CWE

CWE-829 - Inclusion of Functionality from Untrusted Control Sphere

Assigner

VulnCheck mitre root

References

7 references

URL	Tags
https://therealcoiffeur.com/c111011.html	technical-descriptionexploit
https://github.com/mistralai/mistral-vibe/issues/942	technical-descriptionexploit
https://github.com/mistralai/mistral-vibe/release…	release-notes
https://github.com/mistralai/mistral-vibe/pull/962	issue-tracking
https://github.com/mistralai/mistral-vibe/pull/978	issue-tracking
https://github.com/mistralai/mistral-vibe/commit/…	patch
https://www.vulncheck.com/advisories/mistral-vibe…	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
mistralai	mistral-vibe	Affected: 0 , < 2.23.3 (semver)

Date Public

2026-08-05 00:00

Credits

Mathieu Farrell

Show details on NVD website

JSON

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                "id": "CVE-2026-67623",
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                    "Technical Impact": "total"
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                "role": "CISA Coordinator",
                "timestamp": "2026-08-05T14:27:45.827252Z",
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          "lang": "en",
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        }
      ],
      "metrics": [
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            "vulnerabilityResponseEffort": "NOT_DEFINED"
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    "datePublished": "2026-08-05T13:27:27.445Z",
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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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GHSA-G6FR-W8C4-4935

CVE-2026-67623 (GCVE-0-2026-67623)

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