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CVE-2026-81517: CWE-248: Uncaught Exception in MongoDB BI Connector

0
High
VulnerabilityCVE-2026-81517cvecve-2026-81517cwe-248
Published: 08/28/2026 (08/28/2026, 20:14:06 UTC)
Source: CVE Database V5
Vendor/Project: MongoDB
Product: BI Connector

Description

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 v4.0

Score 8.7high

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
None
Vuln. Integrity
None
Vuln. Availability
High
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

Technical Details

Data Version
5.2
Assigner Short Name
mongodb
Date Reserved
2026-08-26T21:33:02.508Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a9206c9acd9273b4963cf5b

Added to database: 08/28/2026, 22:08:09 UTC

Last updated: 08/29/2026, 02:52:11 UTC

Views: 6

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