CVE-2026-81517
MongoDB Connector for BI Improper Error Handling of Log Write Failures May Cause Loss of SQL Service
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-248 |
| Vendor | mongodb |
| Product | bi connector |
| Ecosystems | |
| Industries | Technology |
| Published | Aug 28, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
MongoDB / BI Connector
0 < 2.14.31