---
cve: "CVE-2026-6231"
severity: "MEDIUM"
cvss: 5.3
epss: "0.2%"
vendor: "MongoDB Inc."
kev: false
exploited: false
published: "2026-04-13 15:31:55"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T09:23:06+02:00"
---

# CVE-2026-6231

> 5.3 MEDIUM

## Beschreibung

The bson_validate function may return early on specific inputs and incorrectly report success. This behavior could result in skipping validation for BSON data, allowing malformed or invalid UTF-8 sequences to bypass validation and be processed incorrectly. The issue may affect applications that rely on these functions to validate untrusted BSON data before further processing. This issue affects MongoDB C Driver versions prior to 1.30.5, MongoDB C Driver version 2.0.0 and MongoDB C Driver version 2.0.1

## CVSS-Vektor

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

- 252989c310f7a326230f66311630ba259e34e4b3 (Commit)
- d94ed7a504c227fa8a69d979abff485174f3cf5d (Commit)

## Referenzen

- <https://jira.mongodb.org/browse/CDRIVER-6017>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-6231) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_