CVE-2026-75159: CWE-415: Double Free in MongoDB BI Connector
Description
CVE-2026-75159 is a high-severity vulnerability in MongoDB BI Connector version 2.4.0. An unauthenticated client can cause the mongosqld process to terminate by triggering a double free error during a crafted Kerberos GSSAPI authentication exchange. This results in a denial of service by interrupting BI Connector availability until the process restarts.
CVSS v4.0
Score 8.2high
Affected software
MongoDB
BI Connector
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CWE-415: Double Free) affects MongoDB BI Connector 2.4.0 when configured with Kerberos authentication. An unauthenticated attacker able to reach the BI Connector can send a specially crafted authentication exchange that triggers a specific GSSAPI error-handling condition, causing mongosqld to crash. The impact is a denial of service due to process termination and service interruption until restart.
Potential Impact
The vulnerability allows unauthenticated remote attackers to cause a denial of service by crashing the mongosqld process. This disrupts BI Connector availability until the process is manually or automatically restarted. There is no indication of data compromise or code execution from the provided information.
Mitigation Recommendations
No official patch or remediation level has been provided yet. Users should monitor the vendor advisory for updates and apply any forthcoming patches promptly. Until a fix is available, consider restricting network access to the BI Connector to trusted clients only and monitor for unexpected process terminations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mongodb
- Date Reserved
- 2026-08-17T19:11:21.383Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6a906badacd9273b49839aca
Added to database: 08/27/2026, 16:54:05 UTC
Last enriched: 09/08/2026, 12:38:18 UTC
Last updated: 10/10/2026, 06:48:19 UTC
Views: 49
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