---
cve: "CVE-2026-18687"
severity: "HIGH"
cvss: 7.1
epss: "0.2%"
vendor: "MONGODB"
kev: false
exploited: false
published: "2026-08-11 18:35:14"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-22T13:43:51+02:00"
---

# CVE-2026-18687

> 7.1 HIGH

## Beschreibung

MongoDB Server's handling of a Queryable Encryption maintenance operation did not properly validate certain request parameters against the collection's encrypted field configuration before use. An authenticated user with readWrite privileges could submit a specially formed request that leads to a server crash or excessive internal writes, resulting in resource exhaustion and corruption of encrypted index data.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 1cf71c50824f7acb2805f2cfe7bb8c06c74c33b8 (Commit)
- d100bf19961251f273e1d0bd8ce66fc60634f53c (Commit)

## Referenzen

- <https://jira.mongodb.org/browse/SERVER-130628>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-18687) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_