---
cve: "CVE-2026-88035"
severity: "MEDIUM"
cvss: 5.7
epss: "0.1%"
vendor: "MONGODB"
kev: false
exploited: false
published: "2026-09-10 18:07:10"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T18:26:55+02:00"
---

# CVE-2026-88035

> 5.7 MEDIUM

## Beschreibung

A size check in the client-side authentication path of the MongoDB C Driver can wrap around, so an unusually large user-name value is accepted and copied past the end of a small buffer. A party able to set the driver's connection settings may cause the application that embeds the driver to terminate unexpectedly. Reaching this code requires a build in which the optional external SASL authentication backend is present and a connection configured to use it.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 60ce849d4e33d55963ac130b1542fe136bc0a908 (Commit)
- 8b93d5956fe5b260ce73dc9269dcdeac7cf84011 (Commit)

## Referenzen

- <https://jira.mongodb.org/browse/CDRIVER-6416>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-88035) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_