---
cve: "CVE-2026-41571"
severity: "CRITICAL"
cvss: 9.4
epss: "0.3%"
vendor: "enchant97"
kev: false
exploited: false
published: "2026-05-04 17:42:32"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T09:21:55+02:00"
---

# CVE-2026-41571

> 9.4 CRITICAL · 🧪 PoC

## Beschreibung

Note Mark is an open-source note-taking application. In version 0.19.2, IsPasswordMatch in backend/db/models.go falls back to a hard-coded bcrypt("null") placeholder whenever a user has no stored password. OIDC-registered users are created with an empty password, so anyone who submits password: "null" to the internal login endpoint receives a valid session for that user. The bypass is unauthenticated and requires no user interaction. This issue has been patched in version 0.19.3.

## CVSS-Vektor

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

| 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 | Gering | warn |

## Patch verfügbar (OSV)

- a9e2a7fce6c98ae7e416572d18d898e579b5fdfc (Commit)

## Referenzen

- <https://github.com/enchant97/note-mark/security/advisories/GHSA-pxf8-6wqm-r6hh>
- <https://github.com/enchant97/note-mark/releases/tag/v0.19.3>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-41571) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_