CVE-2026-75159 — MEDIUM (5.9)

Vulnerability Description

An unauthenticated client that can reach a MongoDB Connector for BI deployment configured with Kerberos authentication may cause mongosqld to terminate when a crafted authentication exchange encounters a specific GSSAPI error-handling condition. This can interrupt BI Connector availability until the process restarts.

CVSS Score

5.9

MEDIUM

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

NONE

Integrity

NONE

Availability

HIGH

Related Weaknesses (CWE)

CWE-415

References

https://www.mongodb.com/docs/bi-connector/current/release-notes/#mongodb-connect

FAQ

What is CVE-2026-75159?

CVE-2026-75159 is a vulnerability with a CVSS score of 5.9 (MEDIUM). An unauthenticated client that can reach a MongoDB Connector for BI deployment configured with Kerberos authentication may cause mongosqld to terminate when a crafted authentication exchange encounter...

How severe is CVE-2026-75159?

CVE-2026-75159 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-75159?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.