SurveyKing before 1.13.0 Unauthenticated File Download via /api/public/preview

{
  "id": "e989936c95abdd682f548155d04671616794b572f33cab7c18721892e3af7e94",
  "url": "https://osv.dev/vulnerability/CVE-2026-111646",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "SurveyKing before 1.13.0 Unauthenticated File Download via /api/public/preview",
    "summary": "SurveyKing before 1.13.0 contains a missing authorization vulnerability that allows unauthenticated attackers to download any stored file by id through GET /api/public/preview/{attachmentId}. Attackers who know or derive time-ordered snowflake file ids can bypass shared, owner, and project checks in FileServiceImpl.loadFile to read private survey attachments and respondent uploads.",
    "evidence": "osv:CVE-2026-111646",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-111646",
      "aliases": [
        "CVE-2026-111646"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/javahuang/surveyking",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "9489171d53e55ace2856a91af38034665c0064a4"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "9489171d53e55ace2856a91af38034665c0064a4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.3.0-beta.3",
            "v0.2.0",
            "v0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-111646.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.535850586Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111646.json",
        "https://hackmd.io/@hieuPenguinnn/surveyking-public-preview-unauth-file-read",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-111646",
        "https://www.vulncheck.com/advisories/surveyking-before-1.13.0-unauthenticated-file-download-via-api-public-preview",
        "https://github.com/javahuang/SurveyKing/commit/9489171d53e55ace2856a91af38034665c0064a4",
        "https://github.com/javahuang/SurveyKing",
        "https://github.com/javahuang/SurveyKing/blob/6e1fdd59f9b331ac90a26402ac86a002cc9155a9/server/api/src/main/java/cn/surveyking/server/api/SurveyApi.java#L99-L107",
        "https://github.com/javahuang/SurveyKing/blob/6e1fdd59f9b331ac90a26402ac86a002cc9155a9/server/rdbms/src/main/java/cn/surveyking/server/impl/FileServiceImpl.java#L197-L228"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "VulnCheck",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "1.13.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "1.13.0"
                  }
                ],
                "source": "CPE_FIELD",
                "strategy": "CPEApplicability"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "1.13.0"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/111xxx/CVE-2026-111646.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-111646",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504938,
  "published_at": "2026-10-16T17:39:15.125+00:00"
}