XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpoint

{
  "id": "03e7557bc625871788c292097d0e63a267e1e750e7b1a409c173fc4f09360150",
  "url": "https://osv.dev/vulnerability/CVE-2026-110230",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "XBackBone through 3.8.2 Missing Authorization via Upload Vanity Endpoint",
    "summary": "XBackBone through 3.8.2 contains a missing authorization vulnerability that allows authenticated users to change other users' upload share codes via the POST /upload/{id}/vanity route. Attackers can supply sequential upload ids to MediaController::createVanity() to break existing share links and hijack the freed codes with their own uploads.",
    "evidence": "osv:CVE-2026-110230",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-110230",
      "aliases": [
        "CVE-2026-110230"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/sergix44/xbackbone",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "5e91a2a9859d20e41ee2e2403cfbe673804f6221"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "3.8.2"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5e91a2a9859d20e41ee2e2403cfbe673804f6221"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "3.8.2",
            "3.8.1",
            "3.8.0",
            "3.7.0",
            "3.6.3",
            "3.6.2",
            "3.6.1",
            "3.6.0",
            "3.5.1",
            "3.5.0",
            "3.4.1",
            "3.4.0",
            "3.3.5",
            "3.3.4",
            "3.3.3",
            "3.3.2",
            "3.3.1",
            "3.3.0",
            "3.1.4",
            "3.1.3",
            "3.1.2",
            "3.1.1",
            "3.1",
            "3.1.RC6",
            "3.1.RC5",
            "3.1.RC4",
            "3.1.RC3",
            "3.1.RC2",
            "3.1.RC1",
            "2.6.6",
            "3.0.2",
            "3.0.1",
            "3.0",
            "3.0.RC4",
            "3.0.RC3",
            "3.0.RC2",
            "3.0.RC1",
            "2.6.5",
            "2.6.4",
            "2.6.3",
            "2.6.2",
            "2.6.1",
            "2.6",
            "2.5.3",
            "2.5.2",
            "2.5.1",
            "2.5",
            "2.4.1",
            "2.4",
            "2.3.1",
            "2.3",
            "2.2",
            "2.1",
            "2.0",
            "1.3",
            "1.2",
            "1.1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-110230.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:27.858593783Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110230.json",
        "https://hackmd.io/@1ExmmukzRMWN7B4gQ4W-4Q/ByAj-Xoifl",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-110230",
        "https://www.vulncheck.com/advisories/xbackbone-through-3.8.2-missing-authorization-via-upload-vanity-endpoint",
        "https://github.com/sergix44/xbackbone/commit/5e91a2a9859d20e41ee2e2403cfbe673804f6221",
        "https://github.com/sergix44/xbackbone/pull/671",
        "https://github.com/sergix44/xbackbone",
        "https://github.com/sergix44/xbackbone/blob/226af4f0cec218f563da6d53ececfa4708e6f3e7/app/Controllers/MediaController.php#L204-L229"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/110xxx/CVE-2026-110230.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-110230",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 494307,
  "published_at": "2026-10-13T18:50:13.474+00:00"
}