---
id: CVE-2026-58269
title: >-
  Sync-in Server is an open-source platform for file storage, sharing,
  collaboration, and syncing
summary: >-
  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 a…
severity: high
cvss: 8.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-288
vendor: Sync-in
product: server
affected:
  - server < 2.4.0
patched:
  - '@sync-in/server 2.4.0'
published: '2026-09-21'
updated: '2026-09-24'
sourceUpdated: '2026-09-24T23:17:12.460'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-58269'
references:
  - url: 'https://github.com/Sync-in/server/security/advisories/GHSA-92cr-jxw4-5wjg'
    label: security-advisories@github.com
  - url: 'https://github.com/Sync-in/server/security/advisories/GHSA-92cr-jxw4-5wjg'
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-58269'
  - url: 'https://github.com/Sync-in/server/pull/228'
  - url: >-
      https://github.com/Sync-in/server/commit/3ec74e2ea1f538fe1a3ac9487bdf24a19e548361
  - url: 'https://github.com/Sync-in/server/releases/tag/v2.4.0'
  - url: 'https://github.com/advisories/GHSA-92cr-jxw4-5wjg'
tags:
  - nvd
  - cve.org
  - exploit-available
  - ghsa
  - npm
exploitAvailable: true
ssvc:
  exploitation: poc
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-24T22:38:05.475667Z'
epss: 0.00225
epssPercentile: 0.11824
aliases:
  - GHSA-92cr-jxw4-5wjg
ecosystem: npm
ingestedAt: '2026-09-21T20:52:58.283Z'
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-58269)

Affected packages:

- `@sync-in/server <= 2.3.0`

Patched in:

- `@sync-in/server 2.4.0`

Source: https://github.com/advisories/GHSA-92cr-jxw4-5wjg