Vulnerability-Lookup

GHSA-48J3-8WHW-HQ63

Vulnerability from github – Published: 2026-08-11 18:30 – Updated: 2026-08-11 18:30

Details

The NewNotebook API does not sufficiently sanitize its parameters allowing an authenticated user with NOTEBOOK_EDIT permission to write the notebook record outside the org's data store directory. The file written must have an extension of ".json.db" but can otherwise overwrite other metadata files (such as ACL records, hunts etc). This can corrupt these files and cause data corruption.

Severity

7.1 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-18640"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-22"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-11T16:17:30Z",
    "severity": "HIGH"
  },
  "details": "The NewNotebook API does not sufficiently sanitize its parameters allowing an authenticated user with NOTEBOOK_EDIT permission to write the notebook record outside the org\u0027s data store directory. The file written must have an extension of \".json.db\" but can otherwise overwrite other metadata files (such as ACL records, hunts etc). This can corrupt these files and cause data corruption.",
  "id": "GHSA-48j3-8whw-hq63",
  "modified": "2026-08-11T18:30:46Z",
  "published": "2026-08-11T18:30:46Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-18640"
    },
    {
      "type": "WEB",
      "url": "http://docs.velociraptor.app/announcements/advisories/cve-2026-18640"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-18640 (GCVE-0-2026-18640)

Vulnerability from cvelistv5 – Published: 2026-08-11 14:53 – Updated: 2026-08-11 17:33

Title

Velociraptor directory traversal via the NewNotebook API

Summary

Severity

7.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-11 17:25 UTC

CWE

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Assigner

rapid7

References

1 reference

URL	Tags
http://docs.velociraptor.app/announcements/adviso…

Impacted products

1 product

Vendor	Product	Version
Rapid7	Velociraptor	Affected: 0 , < 0.77.2 (semver)

Credits

Hamad Alghamdi

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-18640",
                "options": [
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                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-11T17:25:02.971758Z",
                "version": "2.0.3"
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        "providerMetadata": {
          "dateUpdated": "2026-08-11T17:33:21.340Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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    ],
    "cna": {
      "affected": [
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          "defaultStatus": "unaffected",
          "product": "Velociraptor",
          "repo": "https://github.com/Velocidex/velociraptor/",
          "vendor": "Rapid7",
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              "lessThan": "0.77.2",
              "status": "affected",
              "version": "0",
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      "configurations": [
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          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "The attacker must have at least the \"analyst\" role to be able to create new notebooks."
            }
          ],
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            }
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      "metrics": [
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            "baseScore": 7.1,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
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            "version": "3.1"
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        "shortName": "rapid7"
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      "references": [
        {
          "url": "http://docs.velociraptor.app/announcements/advisories/cve-2026-18640/"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
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      "title": "Velociraptor directory traversal via the NewNotebook API",
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  "cveMetadata": {
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    "datePublished": "2026-08-11T14:53:18.791Z",
    "dateReserved": "2026-08-03T10:46:49.793Z",
    "dateUpdated": "2026-08-11T17:33:21.340Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

GHSA-48J3-8WHW-HQ63

CVE-2026-18640 (GCVE-0-2026-18640)

Tags

Sightings

Nomenclature