Cloudreve: Inactive/banned account emails leaked via GET /api/v4/user/search because SearchActive() omits the active-status predicate

{
  "id": "723f6dd8521b42017887003699d89ba7dba8d4a2d6f88757669d5f5fc4d7997b",
  "url": "https://osv.dev/vulnerability/CVE-2026-55496",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Cloudreve: Inactive/banned account emails leaked via GET /api/v4/user/search because SearchActive() omits the active-status predicate",
    "summary": "Cloudreve is a self-hosted file management and sharing system. Prior to 4.17.0, GET /api/v4/user/search calls SearchActive without adding a StatusActive predicate and serializes matches at RedactLevelUser, allowing any logged-in user to enumerate email addresses and profile metadata for inactive or banned accounts. The service calls userClient.SearchActive, but despite its name that method filters only by email/nickname keyword and never adds a StatusActive predicate — while the sibling lookups GetActiveByID and GetActiveByDavAccount, defined a few lines above it, do. Search hits are serialized at RedactLevelUser, which includes the email address. This issue is fixed in version 4.17.0.",
    "evidence": "osv:CVE-2026-55496",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-55496",
      "aliases": [
        "CVE-2026-55496",
        "GHSA-8r7f-r8hj-r3rv",
        "GO-2026-6098"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/cloudreve/cloudreve",
              "type": "GIT",
              "events": [
                {
                  "introduced": "d4a145c3ac68f08b9071dec0f2ac025c6dc7362d"
                },
                {
                  "fixed": "7e1289d552794bdbeb551be78456115c87dcb3da"
                },
                {
                  "fixed": "d4a145c3ac68f08b9071dec0f2ac025c6dc7362d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "4.17.0"
                      },
                      {
                        "last_affected": "4.17.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandaloneSingleVersion"
                  },
                  {
                    "range": [
                      {
                        "fixed": "7e1289d552794bdbeb551be78456115c87dcb3da"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "d4a145c3ac68f08b9071dec0f2ac025c6dc7362d"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "4.17.0"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.17.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-55496.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.806107463Z",
      "provider": "osv",
      "references": [
        "https://github.com/cloudreve/cloudreve/releases/tag/4.17.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55496.json",
        "https://github.com/cloudreve/cloudreve/security/advisories/GHSA-8r7f-r8hj-r3rv",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-55496",
        "https://github.com/cloudreve/cloudreve/commit/7e1289d552794bdbeb551be78456115c87dcb3da"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-200",
          "CWE-359"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/55xxx/CVE-2026-55496.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-55496",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497640,
  "published_at": "2026-07-31T03:23:33.099+00:00"
}