{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "1.4.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "5842ca8bf2b984b81c45bf58148a39b348a8995e"
            },
            {
              "fixed": "917b23a6c16d93fc00cef67900eff2755e8b13f7"
            }
          ],
          "repo": "https://github.com/makeplane/plane",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-w2vf-m9x9-mvmc"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-862"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104962.json"
  },
  "details": "Plane is an open-source project management tool. Prior to 1.4.0, GET /api/v1/workspaces/{slug}/projects/{project_id}/members/ returns the complete project-member roster, including each member's email address, first and last name, display name, avatar, and role. ProjectMemberPermission gates the endpoint, but its SAFE_METHODS branch checks only whether the caller is an active ProjectMember of any project in the workspace and does not bind the check to view.project_id. The view then filters solely by the project_id supplied in the URL. Consequently, any authenticated user who belongs to one project in a workspace, including a Guest, can read the roster of another private project in the same workspace. This issue is fixed in 1.4.0.",
  "id": "CVE-2026-104962",
  "modified": "2026-10-07T02:30:50.394258397Z",
  "published": "2026-10-05T16:50:27.183Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/makeplane/plane/releases/tag/v1.4.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104962.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/makeplane/plane/security/advisories/GHSA-w2vf-m9x9-mvmc"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104962"
    },
    {
      "type": "FIX",
      "url": "https://github.com/makeplane/plane/commit/5842ca8bf2b984b81c45bf58148a39b348a8995e"
    },
    {
      "type": "FIX",
      "url": "https://github.com/makeplane/plane/pull/9375"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Plane: Cross-project member roster IDOR in ProjectMemberListCreateAPIEndpoint (missing project scope on reads)"
}