{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.3.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "e902f7ca264f08329bf976abcacafc7403ae6a37"
            }
          ],
          "repo": "https://github.com/sync-in/server",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-q4x5-8cj6-52wg"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-918"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47684.json"
  },
  "details": "Sync-in Server is a secure, open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.3.0, the private IP blocklist regex used in the URL download feature does not match IPv4-mapped IPv6 addresses (e.g. ::ffff:127.0.0.1), allowing SSRF protection to be bypassed on dual-stack systems. Version 2.3.0 fixes the issue.",
  "id": "CVE-2026-47684",
  "modified": "2026-08-12T03:51:36.947717395Z",
  "published": "2026-06-16T14:31:30.807Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Sync-in/server/releases/tag/v2.3.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47684.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Sync-in/server/security/advisories/GHSA-q4x5-8cj6-52wg"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-47684"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Sync-in Server: SSRF protection bypass via IPv4-mapped IPv6 addresses in regExpPrivateIP"
}