CVE-2026-41161

The record

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.

Affected packages

Related vulnerabilities

• GHSA-43fj-qp3h-hrh5 Sync-in Server has Username Enumeration via Timing Attack Same vulnerability
• CVE-2026-47684 Sync-in Server is a secure, open-source platform for file storage, sharing… Also affects @sync-in/server
• GHSA-q4x5-8cj6-52wg Sync-in Server: SSRF protection bypass via IPv4-mapped IPv6 addresses in regExpPrivateIP Also affects @sync-in/server
• GHSA-9jmq-xgjm-p8c2 Sync-in Server has a stored cross-site scripting (XSS) vulnerability Also affects @sync-in/server
• CVE-2025-67438 A Stored Cross-Site Scripting (XSS) vulnerability in Sync-in Server before 1.9.3 allows… Also affects @sync-in/server
• CVE-2026-87946 Observable Timing Discrepancy vulnerability in Drupal SAML SSO - Service Provider allows… CWE-208
• CVE-2026-49265 OAuthLib is an implementation of the OAuth request-signing logic for Python 3.6+. CWE-208
• CVE-2026-77696 Issue summary: SM2 signature generation uses non-constant-time arithmetic on secret… CWE-208