Vulnerability-Lookup

CVE-2026-47388 (GCVE-0-2026-47388)

Vulnerability from cvelistv5 – Published: 2026-06-23 20:09 – Updated: 2026-06-24 14:37

Title

NocoDB: Missing Ownership Check in MCP Attachment Read

Summary

NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, a low-privilege MCP token holder with knowledge of an attachment path could read any file in shared storage, including attachments belonging to other bases and workspaces, because the MCP readAttachment tool did not verify the file's ownership. This vulnerability is fixed in 2026.05.1.

Severity

2.3 (Low)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key

Assigner

GitHub_M

References

1 reference

URL	Tags
https://github.com/nocodb/nocodb/security/advisor…	x_refsource_CONFIRM

Impacted products

1 product

Vendor	Product	Version
nocodb	nocodb	Affected: < 2026.05.1

Show details on NVD website

JSON

To clipboard

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      "title": "NocoDB: Missing Ownership Check in MCP Attachment Read"
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FKIE_CVE-2026-47388

Vulnerability from fkie_nvd - Published: 2026-06-23 21:17 - Updated: 2026-06-25 14:21

Severity

2.3 (Low) - CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Summary

References

	URL	Tags
	security-advisories@github.com	https://github.com/nocodb/nocodb/security/advisories/GHSA-xxpj-q764-9r6q

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "nocodb",
          "vendor": "nocodb",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2026.05.1"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
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  "descriptions": [
    {
      "lang": "en",
      "value": "NocoDB is software for building databases as spreadsheets. Prior to 2026.05.1, a low-privilege MCP token holder with knowledge of an attachment path could read any file in shared storage, including attachments belonging to other bases and workspaces, because the MCP readAttachment tool did not verify the file\u0027s ownership. This vulnerability is fixed in 2026.05.1."
    }
  ],
  "id": "CVE-2026-47388",
  "lastModified": "2026-06-25T14:21:00.260",
  "metrics": {
    "cvssMetricV40": [
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        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
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          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 2.3,
          "baseSeverity": "LOW",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "LOW",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
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        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
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    }
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GHSA-XXPJ-Q764-9R6Q

Vulnerability from github – Published: 2026-06-05 16:22 – Updated: 2026-06-05 16:22

Summary

NocoDB: Missing Ownership Check in MCP Attachment Read

Details

Summary

A low-privilege MCP token holder with knowledge of an attachment path could read any file in shared storage, including attachments belonging to other bases and workspaces, because the MCP readAttachment tool did not verify the file's ownership.

Details

The MCP readAttachment tool accepts caller-supplied path/url values and streams the file via the storage adapter. The handler now looks up the path in nc_file_references and requires a non-deleted row whose base_id matches the caller's MCP context before streaming; otherwise it returns Attachment is not accessible from this MCP context. The lookup tolerates both download/uploads/... and uploads/... styles.

Impact

Arbitrary read against shared storage scoped to attachments the caller's MCP context should not see. Exploitation requires an MCP token and a known attachment path.

Credit

This issue was reported by @helwor-01.

Severity

2.3 (Low)


                  
                    CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 2026.05.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "nocodb"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2026.05.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-47388"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-639"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-06-05T16:22:28Z",
    "nvd_published_at": null,
    "severity": "LOW"
  },
  "details": "### Summary\nA low-privilege MCP token holder with knowledge of an attachment path could read any\nfile in shared storage, including attachments belonging to other bases and workspaces,\nbecause the MCP `readAttachment` tool did not verify the file\u0027s ownership.\n\n### Details\nThe MCP `readAttachment` tool accepts caller-supplied `path`/`url` values and streams\nthe file via the storage adapter. The handler now looks up the path in\n`nc_file_references` and requires a non-deleted row whose `base_id` matches the\ncaller\u0027s MCP context before streaming; otherwise it returns\n`Attachment is not accessible from this MCP context`. The lookup tolerates both\n`download/uploads/...` and `uploads/...` styles.\n\n### Impact\nArbitrary read against shared storage scoped to attachments the caller\u0027s MCP context\nshould not see. Exploitation requires an MCP token and a known attachment path.\n\n### Credit\nThis issue was reported by [@helwor-01](https://github.com/helwor-01).",
  "id": "GHSA-xxpj-q764-9r6q",
  "modified": "2026-06-05T16:22:29Z",
  "published": "2026-06-05T16:22:28Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/nocodb/nocodb/security/advisories/GHSA-xxpj-q764-9r6q"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/nocodb/nocodb"
    },
    {
      "type": "WEB",
      "url": "https://github.com/nocodb/nocodb/releases/tag/2026.05.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "NocoDB: Missing Ownership Check in MCP Attachment Read"
}

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.

Action not permitted

CVE-2026-47388 (GCVE-0-2026-47388)

FKIE_CVE-2026-47388

GHSA-XXPJ-Q764-9R6Q

Summary

Details

Impact

Credit

Tags

Sightings

Nomenclature