CVE-2026-81517

An unauthenticated party able to reach the port of a MongoDB Connector for BI (mongosqld) instance may generate enough routine connection log activity to exhaust the storage backing the configured log path. When a log write or log rotation operation subsequently fails, the resulting error is not handled and the shared mongosqld process ends, ending service for all connected SQL clients. The process continues to end on startup until an operator restores available storage, and the diagnostic message explaining the condition is not recorded.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://www.mongodb.com/docs/bi-connector/current/release-notes/	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:mongodb:bi_connector:*:*:*:*:*:*:*:*

History

29 Sep 2026, 19:14

Type	Values Removed	Values Added
References	~~() https://www.mongodb.com/docs/bi-connector/current/release-notes/ -~~	() https://www.mongodb.com/docs/bi-connector/current/release-notes/ - Vendor Advisory
CPE		cpe:2.3:a:mongodb:bi_connector::::::::
First Time		Mongodb bi Connector Mongodb

Information

Published : 2026-08-28 22:16

Updated : 2026-09-29 19:14

NVD link : CVE-2026-81517

Mitre link : CVE-2026-81517

CVE.ORG link : CVE-2026-81517

JSON object : View

Products Affected

mongodb

bi_connector

CWE

CWE-248

Uncaught Exception

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