FKIE_CVE-2026-105633

Vulnerability from fkie_nvd - Published: 2026-10-05 18:17 - Updated: 2026-10-05 19:17
Severity
7.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
Summary
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.
References
security-advisories@github.comhttps://github.com/makeplane/plane/commit/5829f0febf0739494d576b60d4943d10d236bc96
security-advisories@github.comhttps://github.com/makeplane/plane/pull/9315
security-advisories@github.comhttps://github.com/makeplane/plane/releases/tag/v1.4.0
security-advisories@github.comhttps://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w
134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "plane",
          "vendor": "makeplane",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.0"
            }
          ]
        }
      ],
      "source": "security-advisories@github.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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\u0027s 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."
    }
  ],
  "id": "CVE-2026-105633",
  "lastModified": "2026-10-05T19:17:17.213",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "LOW",
          "baseScore": 7.1,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 4.2,
        "source": "security-advisories@github.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-105633",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-10-05T18:21:45.443968Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-10-05T18:17:36.757",
  "references": [
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/makeplane/plane/commit/5829f0febf0739494d576b60d4943d10d236bc96"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/makeplane/plane/pull/9315"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/makeplane/plane/releases/tag/v1.4.0"
    },
    {
      "source": "security-advisories@github.com",
      "url": "https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "url": "https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w"
    }
  ],
  "sourceIdentifier": "security-advisories@github.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-639"
        }
      ],
      "source": "security-advisories@github.com",
      "type": "Secondary"
    }
  ]
}



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