EUVD-2026-84199

Sync-in Server has Username/Login Enumeration via Timing Side-Channel on POST /api/auth/login incomplete fix of the prior timing-attack advisory...

EUVD-2026-84198

Sync-in Server has a ReDoS via Unsanitized Regex in Sync Diff pathFilters...

EUVD-2026-84115

Sync-in Server has a complete 2FA Bypass via POST /api/auth/token...

EUVD-2026-84112

@sync-in/server vulnerable to TOTP Brute-Force via POST /api/app/sync/register...

CVE-2026-58270

Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.4.0, the sync diff endpoint compiles a user-supplied string into a RegExp with no complexity validation. A catastrophic-backtracking pattern e.g. ^a++b blocks the Node.js event loop...

CVE-2026-58272

Sync-in Server (open-source file storage and collaboration platform) prior to 2.4.1 exposes a timing side-channel on the POST /api/auth/login endpoint. The root cause is that authentication attempts for nonexistent accounts skip the bcrypt comparison performed for existing accounts, producing a m...

CVE-2026-58270

Sync-in Server , an open-source platform for file storage, sharing, and syncing, is vulnerable to a ReDoS (Regular Expression Denial of Service) in the sync diff pathFilters parameter prior to version 2.4.0 . The endpoint compiles a user-supplied string directly into a RegExp without complexity v...

CVE-2026-58271

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,...

CVE-2026-58269

Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.4.0, POST /api/auth/token authenticates with username and password only, then calls getTokens, which returns full access and refresh JWTs without checking whether the account has TO...

CVE-2026-58269 Sync-in Server has a complete 2FA Bypass via `POST /api/auth/token`

Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.4.0, POST /api/auth/token authenticates with username and password only, then calls getTokens, which returns full access and refresh JWTs without checking whether the account has TO...

CVE-2026-58269

Sync-in Server is an open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.4.0 , the POST /api/auth/token endpoint authenticates users with only username and password, then calls getTokens(), which returns full access and refresh JWTs without checking whet...

CVE-2026-58271

Sync-in Server , an open-source platform for file storage and collaboration, is vulnerable to TOTP brute-force in versions prior to 2.4.0 . The endpoint POST /api/app/sync/register fails to increment the passwordAttempts counter on TOTP failure due to a freeze branch in updateAccesses(), so the l...

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,...

CVE-2026-47684

Sync-in Server is a secure, open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.3.0, the private IP blocklist regex used in the URL download feature does not match IPv4-mapped IPv6 addresses e.g. ::ffff:127.0.0.1, allowing SSRF protection to be bypassed ...

CVE-2026-47684

CVE-2026-47684 — Sync-in Server SSRF bypass (IPv4-mapped IPv6 addresses) Affected product: Sync-in Server (file storage/sharing/collaboration). Vulnerability: The private IP blocklist regex (regExpPrivateIP) used in the URL download feature does not match IPv4-mapped IPv6 addresses (e.g., ::ffff:...

CVE-2026-47684 Sync-in Server: SSRF protection bypass via IPv4-mapped IPv6 addresses in regExpPrivateIP

Sync-in Server is a secure, open-source platform for file storage, sharing, collaboration, and syncing. Prior to version 2.3.0, the private IP blocklist regex used in the URL download feature does not match IPv4-mapped IPv6 addresses e.g. ::ffff:127.0.0.1, allowing SSRF protection to be bypassed ...

CVE-2026-41161

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...

CVE-2026-41161

Summary: CVE-2026-41161 affects Sync-in Server before version 2.2.0. The /api/auth/login endpoint exposes a timing-based flaw that allows unauthenticated remote attackers to enumerate valid usernames by measuring response times. This is confirmed in the GitHub advisory and CVE descriptions, which...

Timing Attack

Overview @sync-in/server is a The secure, open-source platform for file storage, sharing, collaboration, and syncing Affected versions of this package are vulnerable to Timing Attack via the login process. An attacker can obtain valid usernames by measuring differences in response times from the...

PT-2026-37110

Name of the Vulnerable Software and Affected Versions Sync-in Server versions prior to 2.2.0 Description A logic flaw in the "/api/auth/login" endpoint allows unauthenticated remote attackers to enumerate valid usernames by measuring the application's response time. This timing discrepancy occurs...