CVE-2026-41161
Medium
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.
SeverityMedium
CVSS5.3
Exploit probability—
ProductSync-in Server
PublishedMay 8, 2026
First seenMay 8, 2026
Weakness typeCWE-208CWE-208
How to fix
Update
- sync-in sync-in_server2.2.0 or later
- @sync-in/server2.2.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| sync-in sync-in_server | v < 2.2.0 | 2.2.0 |
| @sync-in/servernpm | v < 2.2.0 | 2.2.0 |
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