{"id":"CVE-2026-41161","summary":"Username Enumeration via Timing Attack","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.","aliases":["GHSA-43fj-qp3h-hrh5"],"modified":"2026-08-12T03:51:39.346753586Z","published":"2026-05-08T13:00:54.485Z","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"},"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"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/sync-in/server","events":[{"introduced":"0"},{"fixed":"effab16967f42e097e294d719571fe516d44562b"}],"database_specific":{"extracted_events":[{"introduced":"0"},{"fixed":"2.2.0"}],"source":["AFFECTED_FIELD","CPE_RANGE","REFERENCES"],"cpe":"cpe:2.3:a:sync-in:sync-in_server:*:*:*:*:*:*:*:*"}}],"versions":["v2.1.0","v2.0.0","v1.11.0","v1.10.1","v1.10.0","v1.9.6","v1.9.5","v1.9.4","v1.9.3","v1.9.2","v1.9.1","v1.9.0","v1.8.1","v1.8.0","v1.7.0","v1.6.1","v1.6.0","v1.5.2","v1.5.1","v1.5.0","v1.4.0","v1.3.9","v1.3.8","v1.3.7","v1.3.6","v1.3.5","v1.3.4","v1.3.3","v1.3.2","v1.3.1","v1.3.0","v1.2.2","v1.2.1","v1.2.0","v1.1.1","v1.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-41161.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","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"}]}