Vulnerability-Lookup

GHSA-XHM9-GWGW-3Q2Q

Vulnerability from github – Published: 2026-10-07 20:29 – Updated: 2026-10-07 20:29

Summary

@payloadcms/plugin-multi-tenant has a cross-tenant create issue

Details

Impact

An authenticated user limited to one tenant could create a record in another tenant. This requires the multi-tenant plugin with at least one tenant-enabled collection.

Reads and direct edits to an existing target-tenant document were not bypassed.

You are affected if: - You are using @payloadcms/plugin-multi-tenant

Patches

Users should upgrade Payload packages to >= 3.90.0 or >= 4.0.0-canary.34.

Workarounds

You can add access control with accessResultOverride on the multi-tenant collection config to ensure a user has access to the tenant before creating.

Severity

5.3 (Medium)


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

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{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "@payloadcms/plugin-multi-tenant"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.90.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "npm",
        "name": "@payloadcms/plugin-multi-tenant"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.0.0-canary.0"
            },
            {
              "fixed": "4.0.0-canary.34"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-105864"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-07T20:29:27Z",
    "nvd_published_at": "2026-10-06T17:17:22Z",
    "severity": "MODERATE"
  },
  "details": "### Impact\nAn authenticated user limited to one tenant could create a record in another tenant. This requires the multi-tenant plugin with at least one tenant-enabled collection.\n\nReads and direct edits to an existing target-tenant document were not bypassed.\n\nYou are affected if:\n- You are using @payloadcms/plugin-multi-tenant\n\n### Patches\nUsers should upgrade Payload packages to `\u003e= 3.90.0` or `\u003e= 4.0.0-canary.34`.\n\n### Workarounds\nYou can add access control with `accessResultOverride` on the multi-tenant collection config to ensure a user has access to the tenant before creating.",
  "id": "GHSA-xhm9-gwgw-3q2q",
  "modified": "2026-10-07T20:29:28Z",
  "published": "2026-10-07T20:29:27Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/payloadcms/payload/security/advisories/GHSA-xhm9-gwgw-3q2q"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-105864"
    },
    {
      "type": "WEB",
      "url": "https://github.com/payloadcms/payload/commit/b8fc06a18afb6974dc07f95ac1e541c716e5926b"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/payloadcms/payload"
    },
    {
      "type": "WEB",
      "url": "https://github.com/payloadcms/payload/releases/tag/v3.90.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "@payloadcms/plugin-multi-tenant has a cross-tenant create issue"
}

CVE-2026-105864 (GCVE-0-2026-105864)

Vulnerability from cvelistv5 – Published: 2026-10-06 16:42 – Updated: 2026-10-06 17:25

Title

Payload: Cross-tenant create in @payloadcms/plugin-multi-tenant

Summary

Payload is a free and open source headless content management system. In @payloadcms/plugin-multi-tenant versions before 3.90.0 and canary versions before 4.0.0-canary.34, an authenticated user limited to one tenant can create a record in another tenant when at least one tenant-enabled collection exists. Reads and direct edits of existing documents in the target tenant are not bypassed. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-06 17:25 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

GitHub_M mitre root Scorecard

References

3 references

URL	Tags
https://github.com/payloadcms/payload/security/ad…	x_refsource_CONFIRM
https://github.com/payloadcms/payload/commit/b8fc…	x_refsource_MISC
https://github.com/payloadcms/payload/releases/ta…	x_refsource_MISC

Impacted products

2 products

Vendor	Product	Version
payloadcms	payload	Affected: < 3.90.0 Affected: >= 4.0.0-canary.0, < 4.0.0-canary.34
@payloadcms	plugin-multi-tenant	Affected: < 3.90.0 Affected: >= 4.0.0-canary.0, < 4.0.0-canary.34

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-105864",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-06T17:25:08.590502Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-06T17:25:18.758Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "payload",
          "vendor": "payloadcms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.90.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.0.0-canary.0, \u003c 4.0.0-canary.34"
            }
          ]
        },
        {
          "product": "plugin-multi-tenant",
          "vendor": "@payloadcms",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 3.90.0"
            },
            {
              "status": "affected",
              "version": "\u003e= 4.0.0-canary.0, \u003c 4.0.0-canary.34"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Payload is a free and open source headless content management system. In @payloadcms/plugin-multi-tenant versions before 3.90.0 and canary versions before 4.0.0-canary.34, an authenticated user limited to one tenant can create a record in another tenant when at least one tenant-enabled collection exists. Reads and direct edits of existing documents in the target tenant are not bypassed. This issue is fixed in versions 3.90.0 and 4.0.0-canary.34."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "NONE",
            "vulnIntegrityImpact": "LOW"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-06T16:42:27.942Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/payloadcms/payload/security/advisories/GHSA-xhm9-gwgw-3q2q",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/payloadcms/payload/security/advisories/GHSA-xhm9-gwgw-3q2q"
        },
        {
          "name": "https://github.com/payloadcms/payload/commit/b8fc06a18afb6974dc07f95ac1e541c716e5926b",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/payloadcms/payload/commit/b8fc06a18afb6974dc07f95ac1e541c716e5926b"
        },
        {
          "name": "https://github.com/payloadcms/payload/releases/tag/v3.90.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/payloadcms/payload/releases/tag/v3.90.0"
        }
      ],
      "source": {
        "advisory": "GHSA-xhm9-gwgw-3q2q",
        "discovery": "UNKNOWN"
      },
      "title": "Payload: Cross-tenant create in @payloadcms/plugin-multi-tenant"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-105864",
    "datePublished": "2026-10-06T16:42:27.942Z",
    "dateReserved": "2026-10-05T23:06:29.748Z",
    "dateUpdated": "2026-10-06T17:25:18.758Z",
    "state": "PUBLISHED"
  },
  "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.

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.
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