PdfDing: Shared PDF Expiration, Max Views, and Deletion Bypass via Serve/Download Endpoints

{
  "id": "3de804a8abd0cbdb59d80c0d827e29947bf402a4245dace71e4ac235376f898d",
  "url": "https://osv.dev/vulnerability/CVE-2026-34586",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "PdfDing: Shared PDF Expiration, Max Views, and Deletion Bypass via Serve/Download Endpoints",
    "summary": "PdfDing is a selfhosted PDF manager, viewer and editor offering a seamless user experience on multiple devices. Prior to version 1.7.1, check_shared_access_allowed() validates only session existence — it does not check SharedPdf.inactive (expiration / max views) or SharedPdf.deleted. The Serve and Download endpoints rely solely on this function, allowing previously-authorized users to access shared PDF content after expiration, view limit, or soft-deletion. This issue has been patched in version 1.7.1.",
    "evidence": "osv:CVE-2026-34586",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-34586",
      "aliases": [
        "CVE-2026-34586",
        "GHSA-vfqx-2464-38wf"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mrmn2/pdfding",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "66ffaf03db66f78b1af8f40c5c4d901ff9c560ec"
                },
                {
                  "fixed": "a6783b259b25c839c52c6f2380333827a52e89eb"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:pdfding:pdfding:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.7.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "a6783b259b25c839c52c6f2380333827a52e89eb"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v1.7.0",
            "v1.6.3",
            "v1.6.2",
            "v1.6.1",
            "v1.6.0",
            "v1.5.1",
            "v1.5.0",
            "v1.4.1",
            "v1.4.0",
            "v1.3.3",
            "v1.3.2",
            "v1.3.1",
            "v1.3.0",
            "v1.2.1",
            "v1.2.0",
            "v1.1.0",
            "v1.0.0",
            "v0.12.3",
            "v0.12.2",
            "v0.12.1",
            "v0.12.0",
            "v0.11.0",
            "0.10.0",
            "0.9.1",
            "0.9.0",
            "0.8.0",
            "0.7.0",
            "0.6.2",
            "0.6.1",
            "0.6.0",
            "0.5.0",
            "0.4.2",
            "0.4.1",
            "0.4.0",
            "0.3.4",
            "0.3.3",
            "0.3.2",
            "0.3.1",
            "0.3.0",
            "0.2.0",
            "0.1.2",
            "0.1.1",
            "0.1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-34586.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:24.750135922Z",
      "provider": "osv",
      "references": [
        "https://github.com/mrmn2/PdfDing/releases/tag/v1.7.1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34586.json",
        "https://github.com/mrmn2/PdfDing/security/advisories/GHSA-vfqx-2464-38wf",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-34586",
        "https://github.com/mrmn2/PdfDing/commit/a6783b259b25c839c52c6f2380333827a52e89eb"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-863"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/34xxx/CVE-2026-34586.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-34586",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 491346,
  "published_at": "2026-03-31T20:27:50.597+00:00"
}