CVE-2026-9740 Unbounded recursion in BSONColumn interleaved-reference causes pre-auth stack overflow

A vulnerability in MongoDB Server's BSON validation logic allows an unauthenticated user to crash the mongod process by sending a specially crafted message. The BSON validator's handling of certain nested binary data structures permits uncontrolled mutual recursion between validation functions,...

CVE-2026-9740 Unbounded recursion in BSONColumn interleaved-reference causes pre-auth stack overflow

A vulnerability in MongoDB Server's BSON validation logic allows an unauthenticated user to crash the mongod process by sending a specially crafted message. The BSON validator's handling of certain nested binary data structures permits uncontrolled mutual recursion between validation functions,...

CVE-2026-9740

Affected software: MongoDB Server. Vulnerability: BSON validation logic allows unauthenticated users to crash mongod via a specially crafted message. The BSON validator’s handling of certain nested binary data structures enables uncontrolled mutual recursion, where each re-entry resets internal d...

CVE-2026-9735

CVE-2026-9735 concerns MongoDB server logging of SASL authentication parameters. The connected documents specify that when connection health metric logging is enabled, full authentication parameters (potentially including credentials) may be written to the server log without redaction. The NVD/NV...

CVE-2026-9735 Keyfile contents are in MongoDB Server logs

MongoDB server may log authentication parameters, including credentials, to the server log during SASL authentication. When connection health metric logging is enabled, the full authentication parameters are written to the log without redaction...

Keyfile contents are in MongoDB Server logs

MongoDB server may log authentication parameters, including credentials, to the server log during SASL authentication. When connection health metric logging is enabled, the full authentication parameters are written to the log without redaction...

CVE-2026-9735 Keyfile contents are in MongoDB Server logs

MongoDB server may log authentication parameters, including credentials, to the server log during SASL authentication. When connection health metric logging is enabled, the full authentication parameters are written to the log without redaction...

CVE-2026-9750

CVE-2026-9750 affects MongoDB: an authenticated user can cause a server crash or incorrect query results by crafting documents that clash with internal metadata during query execution. The root cause is insufficient separation between user-controlled document fields and internal metadata in certa...

CVE-2026-9750 Metadata name collision on $-prefixed fields causes post-auth server crash

An authenticated user can cause a MongoDB server to crash or return incorrect results by creating documents that interfere with internal metadata processing during query execution. This stems from insufficient separation between user-controlled document fields and internal metadata in certain...

Metadata name collision on $-prefixed fields causes post-auth server crash

An authenticated user can cause a MongoDB server to crash or return incorrect results by creating documents that interfere with internal metadata processing during query execution. This stems from insufficient separation between user-controlled document fields and internal metadata in certain...

CVE-2026-9750 Metadata name collision on $-prefixed fields causes post-auth server crash

An authenticated user can cause a MongoDB server to crash or return incorrect results by creating documents that interfere with internal metadata processing during query execution. This stems from insufficient separation between user-controlled document fields and internal metadata in certain...

CVE-2026-9747

The vulnerability CVE-2026-9747 affects MongoDB Server’s cross-shard merge aggregation. When building aggregations, using fromRouter:true with runtimeConstants.userRoles may cause the server to crash. The connected documentation confirms the issue but provides no details on mitigations; exploitat...

Crafted cross-shard merge aggregation crashes MongoDB Server

Adding fromRouter:true and runtimeConstants.userRoles could cause aggregations to crash mongodb server...

CVE-2026-9743 Aggregation sub-pipeline null dereference may allow DoS via crafted getMore

In MongoDB Server 8.0, an aggregation stage can leave its subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid addres...

CVE-2026-9743 Aggregation sub-pipeline null dereference may allow DoS via crafted getMore

In MongoDB Server 8.0, an aggregation stage can leave its subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid addres...

CVE-2026-9743

MongoDB Server 8.0 is affected by a vulnerability where an aggregation stage can leave its _subPipeline field null during processing. If a getMore is issued on the same cursor, the server may dereference the null sub-pipeline when reattaching to the operation context, leading to an invalid addres...

CVE-2026-9743 Aggregation sub-pipeline null dereference may allow DoS via crafted getMore

In MongoDB Server 8.0, an aggregation stage can leave its subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid addres...

Aggregation sub-pipeline null dereference may allow DoS via crafted getMore

In MongoDB Server 8.0, an aggregation stage can leave its subPipeline field null during processing of certain pipelines. If a getMore is subsequently issued on the same cursor, the server may dereference this null sub-pipeline when reattaching to the operation context, accessing an invalid addres...

PT-2026-48291

Name of the Vulnerable Software and Affected Versions MongoDB Server version 8.0 Description An aggregation stage can leave its subPipeline field null during the processing of specific pipelines. If a getMore command is subsequently issued on the same cursor, the server may dereference this null...

Improper Neutralization of Special Elements in Data Query Logic

Overview Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Data Query Logic via the @Query regex parameter binding when a bound parameter is placed inside a regular expression literal using \Q...\E quoting e.g. @Query" name : /^\\Q?0\\E$/ "...