Mongodb Bi Connector vulnerabilities

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Published CVEs affecting Mongodb Bi Connector: 8 record(s), with affected versions and fixes.
cpe:2.3:a:mongodb:bi_connector

CVE-2026-81520 High · 7.5 CWE-1088 Aug 28, 2026

MongoDB Connector for BI Unbounded Authentication Negotiation Leading to Connection Exhaustion

A network-reachable client that has not yet authenticated can hold a MongoDB Connector for BI authentication session open indefinitely by beginning a SASL-based login exchange and then declining to complete it. Because the negotiation loop had no overall time bound and the read from the client had no deadline, each such session retains a worker, a client connection slot, and its associated backend database connections until the process is restarted. Repeated use of this behavior can consume the configured connection capacity and prevent legitimate users from establishing new sessions.

CVE-2026-81518 High · 7.5 CWE-295 Aug 28, 2026

BI Connector Optional Client Certificate Verification Allows Unauthenticated Connections

When mongosqld is configured with a client certificate authority file, the listener requests a client certificate during the TLS handshake but does not require one, so a client that presents no certificate is still accepted. In deployments that rely on client certificates as the sole means of identifying users, a remote party with network access to the listener can therefore establish a session and read the MongoDB data exposed through the connector.

CVE-2026-81517 High · 7.5 CWE-248 Aug 28, 2026

MongoDB Connector for BI Improper Error Handling of Log Write Failures May Cause Loss of SQL Service

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.

CVE-2026-81490 High · 7.7 CWE-476 Aug 28, 2026

MongoDB Connector for BI Improper Error Handling During Schema Sampling May Cause Loss of SQL Service

A database user able to create a view in a namespace that MongoDB Connector for BI samples can cause the schema-sampling routine to stop functioning by defining a view whose evaluation reliably fails. The sampling logic classifies the resulting server message as transient and, after the configured retries are exhausted, proceeds without a valid result, ending the schema refresh routine. The mongosqld process continues running without a usable schema, so SQL clients are unable to obtain results until an operator removes the view or excludes its namespace from sampling.

CVE-2026-77586 High · 8.0 CWE-89 Aug 28, 2026

MongoDB Connector for BI Unescaped Object Names in Generated SHOW CREATE Output

In MongoDB Connector for BI, MongoDB object names such as collection, field, and index names are placed into the quoted identifiers of the DDL text returned by SHOW CREATE statements without escaping the identifier delimiter. A user with permission to write to a sampled MongoDB collection can choose a name that closes the quoted identifier early, so that additional SQL text becomes part of the generated output. If an operator or automated tool later replays that generated statement against a SQL server, the additional text is executed with the privileges of that session.

CVE-2026-77184 Medium · 5.2 CWE-89 Aug 28, 2026

MongoDB Connector for BI Incomplete Escaping of Stored Metadata in Generated SHOW CREATE Output

In MongoDB Connector for BI, the description text of a collection's JSON schema validator is incorporated into the comment text of the DDL returned by SHOW CREATE statements without complete escaping of backslash characters. A user with permission to modify a collection's schema validator, in deployments configured to build their SQL schema from those validators, can cause additional SQL text to be embedded in that generated output. If an operator or automated tool later replays that generated statement against a SQL server, the additional text is executed with the privileges of that session.

CVE-2026-75573 Medium · 5.5 CWE-532 Aug 27, 2026

MongoDB Connector for BI mongodrdl Logs TLS Private-Key Password When Duplicate Options Are Supplied

In MongoDB Connector for BI, mongodrdl may write a TLS private-key password to standard error when the password is supplied through both the connection URI and the corresponding command-line option. A local user with access to the captured command output and encrypted key file may use the disclosed password to access the associated TLS client key.

CVE-2026-75159 High · 7.5 CWE-415 Aug 27, 2026

MongoDB BI Connector Improper Memory Handling During Failed Kerberos Authentication May Cause Process Termination

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.