CVE-2026-75159
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MongoDB BI Connector Kerberos Authentication Crash

Publication date: 2026-08-27

Last updated on: 2026-08-27

Assigner: MongoDB, Inc.

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.

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Meta Information

Published
2026-08-27
Last Modified
2026-08-27
Generated
2026-09-16
AI Q&A
2026-08-27
EPSS Evaluated
2026-09-15
NVD
CVE-2026-75159
EUVD
EUVD-2026-67083

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mongodb mongodb_connector_for_bi *

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-415 The product calls free() twice on the same memory address.

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Executive Summary

This vulnerability allows an unauthenticated client to crash the MongoDB Connector for BI when using Kerberos authentication. A crafted authentication exchange triggers a specific error-handling condition in GSSAPI, causing the mongosqld process to terminate and disrupting BI Connector availability until it restarts.

Detection Guidance

Detecting this vulnerability requires monitoring for unexpected termination of mongosqld processes in MongoDB Connector for BI deployments using Kerberos authentication. Check logs for GSSAPI error-handling conditions or crashes during authentication exchanges.

Impact Analysis

If you use MongoDB Connector for BI with Kerberos authentication, this flaw could lead to unexpected downtime. An attacker could exploit it to crash the service, making BI tools unavailable until manually restarted, potentially disrupting data analysis and reporting.

Compliance Impact

This vulnerability may cause temporary unavailability of the MongoDB Connector for BI, potentially disrupting data access and reporting. For compliance standards like GDPR or HIPAA, which require consistent data availability and integrity, such disruptions could impact adherence to requirements for timely data access and processing.

Mitigation Strategies

Apply the latest patch or update from MongoDB for the Connector for BI. Disable Kerberos authentication if not required. Restrict network access to mongosqld to trusted sources only.

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