---
cve: "CVE-2026-27575"
severity: "CRITICAL"
cvss: 9.1
epss: "0.4%"
vendor: "go-vikunja"
kev: false
exploited: false
published: "2026-02-25 22:16:26"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-20T20:04:16+02:00"
---

# CVE-2026-27575

> 9.1 CRITICAL · 🧪 PoC

## Beschreibung

Vikunja is an open-source self-hosted task management platform. Prior to version 2.0.0, the application allows users to set weak passwords (e.g., 1234, password) without enforcing minimum strength requirements. Additionally, active sessions remain valid after a user changes their password. An attacker who compromises an account (via brute-force or credential stuffing) can maintain persistent access even after the victim resets their password. Version 2.0.0 contains a fix.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Patch verfügbar (OSV)

- 25268530e4a81d69708d1b123b63e9193497f431 (Commit)

## Referenzen

- <https://github.com/go-vikunja/vikunja/security/advisories/GHSA-3ccg-x393-96v8>
- <https://vikunja.io/changelog/vikunja-v2.0.0-was-released>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-27575) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_