{
  "id": "CVE-2026-105633",
  "url": "https://spydr.io/cve/CVE-2026-105633",
  "published": "2026-10-05T18:17:36.757Z",
  "modified": "2026-10-05T19:17:17.213Z",
  "score": 7.1,
  "severity": "high",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
  "score_source": "github.com",
  "epss": null,
  "epss_percentile": null,
  "exploited": false,
  "kev": null,
  "ssvc_exploitation": "poc",
  "vendors": [
    "makeplane"
  ],
  "products": [
    "makeplane plane"
  ],
  "cwes": [
    "CWE-639"
  ],
  "description": "Plane is an open-source project management tool. Prior to 1.4.0, the V2 issue-attachment PATCH endpoint accepts issue_id in the URL but omits it from the database query. A project member can use an issue_id they control in the URL while targeting another user's attachment by its pk UUID. Because the server matches only pk, workspace, and project_id, it modifies the attachment regardless of the issue_id in the URL. When the attachment is pending and has not been confirmed as uploaded, the PATCH handler sets created_by = request.user and transfers attachment ownership to the attacker. This issue is fixed in 1.4.0.",
  "status": "Deferred",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 7.1,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://github.com/makeplane/plane/commit/5829f0febf0739494d576b60d4943d10d236bc96",
      "tags": []
    },
    {
      "url": "https://github.com/makeplane/plane/pull/9315",
      "tags": []
    },
    {
      "url": "https://github.com/makeplane/plane/releases/tag/v1.4.0",
      "tags": []
    },
    {
      "url": "https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w",
      "tags": []
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-105633",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}