---
cve: "CVE-2026-18888"
severity: "HIGH"
cvss: 7.1
epss: "29%"
vendor: "MONGODB"
kev: false
exploited: false
published: "2026-08-12 21:17:37"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-16T18:25:06+02:00"
---

# CVE-2026-18888

> 7.1 HIGH · 🧪 PoC

## Beschreibung

The MongoDB BI Connector ODBC Driver converts floating point column values into text without checking that the result fits within the destination buffer. When an application reads a sufficiently large floating point value as text, the driver may write beyond the end of that buffer and corrupt adjacent memory. A user who can store data in a collection read through the BI Connector could use this to crash the application performing the read.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/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)

- 6c875f477f3c6b8f6b5620b80fd74f36678f3651 (Commit)

## Referenzen

- <https://github.com/mongodb/mongo-bi-connector-odbc-driver/releases/tag/v1.4.9>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-18888) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_