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Description

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.

PUBLISHED Reserved 2026-04-17 | Published 2026-05-08 | Updated 2026-05-08 | Assigner GitHub_M




MEDIUM: 6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Problem types

CWE-208: Observable Timing Discrepancy

Product status

< 2.2.0
affected

References

github.com/...server/security/advisories/GHSA-43fj-qp3h-hrh5

github.com/Sync-in/server/releases/tag/v2.2.0

cve.org (CVE-2026-41161)

nvd.nist.gov (CVE-2026-41161)

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