{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:sync-in:sync-in_server:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "2.2.0"
              }
            ],
            "source": [
              "AFFECTED_FIELD",
              "CPE_RANGE",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "effab16967f42e097e294d719571fe516d44562b"
            }
          ],
          "repo": "https://github.com/sync-in/server",
          "type": "GIT"
        }
      ]
    }
  ],
  "aliases": [
    "GHSA-43fj-qp3h-hrh5"
  ],
  "database_specific": {
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
      "CWE-208"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41161.json"
  },
  "details": "Sync-in Server is a secure, open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.2.0, the /api/auth/login endpoint contains a logic flaw that allows unauthenticated remote attackers to enumerate valid usernames by measuring the application's response time. This issue has been patched in version 2.2.0.",
  "id": "CVE-2026-41161",
  "modified": "2026-08-12T03:51:39.346753586Z",
  "published": "2026-05-08T13:00:54.485Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/Sync-in/server/releases/tag/v2.2.0"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/41xxx/CVE-2026-41161.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/Sync-in/server/security/advisories/GHSA-43fj-qp3h-hrh5"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41161"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Username Enumeration via Timing Attack"
}