---
cve: "CVE-2026-18703"
severity: "LOW"
cvss: 2.3
epss: "12%"
vendor: "MONGODB"
kev: false
exploited: false
published: "2026-08-11 19:17:24"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-18T07:49:44+02:00"
---

# CVE-2026-18703

> 2.3 LOW

## Beschreibung

An issue in MongoDB Server could allow a party with a valid client certificate and a corresponding user account to authenticate using a certificate-based authentication method, even when an administrator has configured the server to restrict authentication to other mechanisms. This could allow authentication through a method the administrator intended to disable.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- d100bf19961251f273e1d0bd8ce66fc60634f53c (Commit)

## Referenzen

- <https://jira.mongodb.org/browse/SERVER-127863>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-18703) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_