FileBrowser Quantum Incomplete Remediation of CVE-2026-27611: Password-Protected Share Bypass via /public/api/share/info

{
  "id": "f14aed96337988a567dc3ebc29febcce827b1c9a6e3af7efcb655a6ee8751bf3",
  "url": "https://osv.dev/vulnerability/CVE-2026-30933",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "FileBrowser Quantum Incomplete Remediation of CVE-2026-27611: Password-Protected Share Bypass via /public/api/share/info",
    "summary": "FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-beta and 1.2.2-stable, the remediation for CVE-2026-27611 is incomplete. Password protected shares still disclose tokenized downloadURL via /public/api/share/info. This vulnerability is fixed in 1.3.1-beta and 1.2.2-stable.",
    "evidence": "osv:CVE-2026-30933",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-30933",
      "aliases": [
        "CVE-2026-30933",
        "GHSA-525j-95gf-766f",
        "GO-2026-4659"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/filebrowser/filebrowser",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "6b8a65382f0787968eb2275de4f574a68e13e0b4"
                },
                {
                  "introduced": "4c8b1188484f994a0d287435150cf3d58f3dc0f3"
                },
                {
                  "last_affected": "4c8b1188484f994a0d287435150cf3d58f3dc0f3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:filebrowser:filebrowser:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "1.2.9"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:filebrowser:filebrowser:1.2.1:stable:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "1.2.1-stable"
                      },
                      {
                        "last_affected": "1.2.1-stable"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            },
            {
              "repo": "https://github.com/gtsteffaniak/filebrowser",
              "type": "GIT",
              "events": [
                {
                  "introduced": "e4907225a1ac0be759245417ac4d5289539f2cea"
                },
                {
                  "fixed": "9d6e429a38be5f4d95476e2d272d6cdff7bcb784"
                },
                {
                  "introduced": "a8c9b9419ec530568991a2f72cec4ed263f99e3c"
                },
                {
                  "fixed": "09713b32a5f6e369a5197319749a12b8e7fd5f2b"
                },
                {
                  "introduced": "72d09907031af645c3a8bb85a6db0f5d85bd852c"
                },
                {
                  "last_affected": "72d09907031af645c3a8bb85a6db0f5d85bd852c"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "1.3.0-beta"
                      },
                      {
                        "fixed": "1.3.1-beta"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "1.2.6-beta"
                      },
                      {
                        "fixed": "1.2.2-stable"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "introduced": "= 1.1.3-stable"
                      },
                      {
                        "last_affected": "= 1.1.3-stable"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "09713b32a5f6e369a5197319749a12b8e7fd5f2b"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.2.2-stable"
                  },
                  {
                    "range": [
                      {
                        "fixed": "9d6e429a38be5f4d95476e2d272d6cdff7bcb784"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v1.3.1-beta"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.2.1-stable",
            "= 1.1.3-stable",
            "v1.2.1",
            "v1.1.3-stable"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-30933.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.891235988Z",
      "provider": "osv",
      "references": [
        "https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.2.2-stable",
        "https://github.com/gtsteffaniak/filebrowser/releases/tag/v1.3.1-beta",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30933.json",
        "https://github.com/gtsteffaniak/filebrowser/security/advisories/GHSA-525j-95gf-766f",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-30933"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-200",
          "CWE-306",
          "CWE-602"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/30xxx/CVE-2026-30933.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-30933",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 513965,
  "published_at": "2026-03-10T16:10:56.494+00:00"
}