---
cve: "CVE-2026-41161"
severity: "MEDIUM"
cvss: 6.9
epss: "0.3%"
vendor: "Sync-in"
kev: false
exploited: false
published: "2026-05-08 14:16:33"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-23T12:58:36+02:00"
---

# CVE-2026-41161

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- effab16967f42e097e294d719571fe516d44562b (Commit)

## Referenzen

- <https://github.com/Sync-in/server/security/advisories/GHSA-43fj-qp3h-hrh5>
- <https://github.com/Sync-in/server/releases/tag/v2.2.0>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-41161) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_