YesWiki before 4.6.7 Missing Authorization via Attachment Download Handler

{
  "id": "fc28cf34f9092ec8394a90080543cc083245b91b007447b2495a1d91e08d269b",
  "url": "https://osv.dev/vulnerability/CVE-2026-104472",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "YesWiki before 4.6.7 Missing Authorization via Attachment Download Handler",
    "summary": "YesWiki before 4.6.7 contains a missing authorization vulnerability in the attachment download handler that allows unauthenticated attackers to bypass page read ACLs. Attackers can request the download handler with a known page tag and file parameter to retrieve confidential attachments from read-restricted pages.",
    "evidence": "osv:CVE-2026-104472",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-104472",
      "aliases": [
        "CVE-2026-104472",
        "GHSA-7cj2-9pgf-vcw2"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/yeswiki/yeswiki",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "07120ed8971047f504f7ec78060828f1895f475f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.6.7"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "4.6.7"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v4.6.6",
            "v4.6.5",
            "v4.6.4",
            "v4.6.3",
            "v4.6.2",
            "v4.6.0",
            "v4.5.5",
            "v4.5.4",
            "v4.5.3",
            "v4.5.2",
            "v4.5.1",
            "v4.4.3",
            "v4.4.2",
            "v4.4.1",
            "v4.4.0",
            "v4.3.1",
            "v4.3.0",
            "v4.2.2",
            "v4.2.1",
            "v4.2.0",
            "v4.1.5",
            "v4.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-104472.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.323761040Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104472.json",
        "https://github.com/YesWiki/yeswiki/security/advisories/GHSA-7cj2-9pgf-vcw2",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-104472",
        "https://www.vulncheck.com/advisories/yeswiki-before-4.6.7-missing-authorization-via-attachment-download-handler"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-862"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/104xxx/CVE-2026-104472.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-104472",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509001,
  "published_at": "2026-10-02T11:38:36.71+00:00"
}