CVE-2026-58271 @sync-in/server vulnerable to TOTP Brute-Force via `POST /api/app/sync/register`

Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.4.0, POST /api/app/sync/register accepts credentials and a TOTP code to register a desktop sync client. On a failed TOTP, SyncClientsManager.register calls updateAccessesuser, ip,...

PT-2026-96234

Name of the Vulnerable Software and Affected Versions Sync-in Server versions prior to 2.4.0 Description An issue exists where the account lockout mechanism fails to trigger during repeated Time-based One-Time Password TOTP failures. When using the POST /api/app/sync/register endpoint to register...