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CVE-2026-58269

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

This page contains facts from public vulnerability sources. Check the original advisory before updating.

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 TOTP 2FA enabled. An attacker with stolen or phished credentials can bypass 2FA in a single request. The parallel login endpoint (`POST /api/auth/login`) correctly enforces 2FA by calling `setCookies(user, res, true)`, which gates on `user.twoFaEnabled`. Version 2.4.0 patches the issue.

CVSS 8.1 · High · EPSS 0.3% · Fix available

Published
Updated

Stack: node

Affected products and versions

  • server

    Versions
    • < 2.4.0: Affected

    No fix published

  • @sync-in/server npm

    Affected ranges
    • SEMVER: < 2.4.0

    Update to 2.4.0

Original sources

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