{
  "id": "CVE-2026-104965",
  "url": "https://spydr.io/cve/CVE-2026-104965",
  "published": "2026-10-05T17:17:12.103Z",
  "modified": "2026-10-05T18:17:31.887Z",
  "score": 5.4,
  "severity": "medium",
  "cvss_version": "3.1",
  "vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N",
  "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 issue-relation endpoint accepts issue UUIDs in the request body without validating that they belong to the caller's workspace. An authenticated user can create relations linking their own issues to issues in any other workspace on the instance, leaking issue metadata through activity events. This issue is fixed in 1.4.0.",
  "status": "Deferred",
  "score_type": "Secondary",
  "scores": {
    "cvss_v40": null,
    "cvss_v31": 5.4,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://github.com/makeplane/plane/commit/81d9873d7f1cf1d1252ed53c12dd33696be73a89",
      "tags": []
    },
    {
      "url": "https://github.com/makeplane/plane/pull/9269",
      "tags": []
    },
    {
      "url": "https://github.com/makeplane/plane/releases/tag/v1.4.0",
      "tags": []
    },
    {
      "url": "https://github.com/makeplane/plane/security/advisories/GHSA-8cvv-8jh5-g6mj",
      "tags": []
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-104965",
  "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."
    }
  ]
}