CVE-2026-105633 (GCVE-0-2026-105633)

Vulnerability from cvelistv5 – Published: 2026-10-05 17:58 – Updated: 2026-10-05 18:22
VLAI
Title
Plane: Issue Attachment Ownership Hijacking via Missing `issue_id` Scope
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.
Severity
7.1 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 18:21 UTC
CWE
  • CWE-639 - Authorization Bypass Through User-Controlled Key
Assigner
References
Impacted products
Vendor Product Version
makeplane plane Affected: < 1.4.0
Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-105633",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-05T18:21:45.443968Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-05T18:22:11.592Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "plane",
          "vendor": "makeplane",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 1.4.0"
            }
          ]
        }
      ],
      "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "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"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-05T17:58:32.417Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w"
        },
        {
          "name": "https://github.com/makeplane/plane/pull/9315",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/makeplane/plane/pull/9315"
        },
        {
          "name": "https://github.com/makeplane/plane/commit/5829f0febf0739494d576b60d4943d10d236bc96",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/makeplane/plane/commit/5829f0febf0739494d576b60d4943d10d236bc96"
        },
        {
          "name": "https://github.com/makeplane/plane/releases/tag/v1.4.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/makeplane/plane/releases/tag/v1.4.0"
        }
      ],
      "source": {
        "advisory": "GHSA-5mxw-g5mw-3v3w",
        "discovery": "UNKNOWN"
      },
      "title": "Plane: Issue Attachment Ownership Hijacking via Missing `issue_id` Scope"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-105633",
    "datePublished": "2026-10-05T17:58:32.417Z",
    "dateReserved": "2026-10-05T16:40:39.611Z",
    "dateUpdated": "2026-10-05T18:22:11.592Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "nvd": {
      "cve": {
        "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"
          }
        ]
      }
    },
    "vulnrichment": {
      "containers": {
        "adp": [
          {
            "metrics": [
              {
                "other": {
                  "content": {
                    "id": "CVE-2026-105633",
                    "options": [
                      {
                        "Exploitation": "poc"
                      },
                      {
                        "Automatable": "no"
                      },
                      {
                        "Technical Impact": "partial"
                      }
                    ],
                    "role": "CISA Coordinator",
                    "timestamp": "2026-10-05T18:21:45.443968Z",
                    "version": "2.0.3"
                  },
                  "type": "ssvc"
                }
              }
            ],
            "providerMetadata": {
              "dateUpdated": "2026-10-05T18:22:00.957Z",
              "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
              "shortName": "CISA-ADP"
            },
            "references": [
              {
                "tags": [
                  "exploit"
                ],
                "url": "https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w"
              }
            ],
            "title": "CISA ADP Vulnrichment"
          }
        ],
        "cna": {
          "affected": [
            {
              "product": "plane",
              "vendor": "makeplane",
              "versions": [
                {
                  "status": "affected",
                  "version": "\u003c 1.4.0"
                }
              ]
            }
          ],
          "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."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "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"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-639",
                  "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2026-10-05T17:58:32.417Z",
            "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
            "shortName": "GitHub_M"
          },
          "references": [
            {
              "name": "https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w",
              "tags": [
                "x_refsource_CONFIRM"
              ],
              "url": "https://github.com/makeplane/plane/security/advisories/GHSA-5mxw-g5mw-3v3w"
            },
            {
              "name": "https://github.com/makeplane/plane/pull/9315",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/makeplane/plane/pull/9315"
            },
            {
              "name": "https://github.com/makeplane/plane/commit/5829f0febf0739494d576b60d4943d10d236bc96",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/makeplane/plane/commit/5829f0febf0739494d576b60d4943d10d236bc96"
            },
            {
              "name": "https://github.com/makeplane/plane/releases/tag/v1.4.0",
              "tags": [
                "x_refsource_MISC"
              ],
              "url": "https://github.com/makeplane/plane/releases/tag/v1.4.0"
            }
          ],
          "source": {
            "advisory": "GHSA-5mxw-g5mw-3v3w",
            "discovery": "UNKNOWN"
          },
          "title": "Plane: Issue Attachment Ownership Hijacking via Missing `issue_id` Scope"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "assignerShortName": "GitHub_M",
        "cveId": "CVE-2026-105633",
        "datePublished": "2026-10-05T17:58:32.417Z",
        "dateReserved": "2026-10-05T16:40:39.611Z",
        "dateUpdated": "2026-10-05T18:22:11.592Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.