CVE-2026-9749

The CVE-2026-9749 entry describes a bug in MongoDB where an aggregation pipeline using the internal $exchange stage with key-range partitioning and order-preserving delivery can cause a server crash. When a single key range produces many results that fill its exchange buffer, the code path detect...

CVE-2026-9749 Using MaxKey() may crash the server

This issue can occur when running an aggregation pipeline that uses the internal $exchange stage configured with key-range partitioning and order-preserving delivery. If a single key range produces enough documents to fill its exchange buffer that is, many results are routed to the same consumer,...

CVE-2026-9749 Using MaxKey() may crash the server

This issue can occur when running an aggregation pipeline that uses the internal $exchange stage configured with key-range partitioning and order-preserving delivery. If a single key range produces enough documents to fill its exchange buffer that is, many results are routed to the same consumer,...

Using MaxKey() may crash the server

This issue can occur when running an aggregation pipeline that uses the internal $exchange stage configured with key-range partitioning and order-preserving delivery. If a single key range produces enough documents to fill its exchange buffer that is, many results are routed to the same consumer,...

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...

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-2026-9749: Reachable Assertion

This issue can occur when running an aggregation pipeline that uses the internal $exchange stage configured with key-range partitioning and order-preserving delivery. If a single key range produces enough documents to fill its exchange buffer that is, many results are routed to the same consumer,...

PT-2026-48295

Name of the Vulnerable Software and Affected Versions MongoDB affected versions not specified Description A buffer overflow can occur during the execution of an aggregation pipeline using the internal $exchange stage. This happens when the stage is configured with key-range partitioning and...

CVE-2026-4358

A specially crafted aggregation query with $lookup by an authenticated user with write privileges can cause a double-free or use-after-free memory issue in the slot-based execution SBE engine when an in-memory hash table is spilled to disk...

CVE-2026-4148: Use After Free

A use-after-free vulnerability can be triggered in sharded clusters by an authenticated user with the read role who issues a specially crafted $lookup or $graphLookup aggregation pipeline...

PT-2026-25907

Name of the Vulnerable Software and Affected Versions MongoDB Server affected versions not specified Description A use-after-free issue can occur in sharded clusters when a user with read access submits a specifically designed aggregation pipeline using either the $lookup or $graphLookup operator...

EUVD-2021-18906

Malware in sbrugna...

EUVD-2025-20265

Malicious code in bioql PyPI...

Linux Distros Unpatched Vulnerability : CVE-2021-32040

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - It may be possible to have an extremely long aggregation pipeline in conjunction with a specific stage/operator and cause a stack overflow due to the size of th...

MongoDB 6.0.x < 6.0.22 / 7.0.x < 7.0.20 / 8.0.x < 8.0.7 Privilege Escalation (SERVER-106752)

The version of MongoDB installed on the remote host is 6.0 prior to 6.0.22, 7.0 prior to 7.0.20 and 8.0 prior to 8.0.7. It is, therefore, affected by a vulnerability as referenced in the SERVER-106752 advisory. - An unauthorized user may leverage a specially crafted aggregation pipeline to access...

MongoDB Server Authorization Issues Vulnerability (CNVD-2025-15515)

MongoDB Server is the United States MongoDB company's set of open source NoSQL database . The database provides collection-oriented storage , dynamic query , data replication and automatic failover and other functions . A security vulnerability exists in MongoDB Server versions prior to 8.0.7,...

UBUNTU-CVE-2025-6713

An unauthorized user may leverage a specially crafted aggregation pipeline to access data without proper authorization due to improper handling of the $mergeCursors stage in MongoDB Server. This may lead to access to data without further authorisation. This issue affects MongoDB Server MongoDB...

CVE-2025-6713 MongoDB Server may be susceptible to privilege escalation due to $mergeCursors stage

An unauthorized user may leverage a specially crafted aggregation pipeline to access data without proper authorization due to improper handling of the $mergeCursors stage in MongoDB Server. This may lead to access to data without further authorisation. This issue affects MongoDB Server MongoDB...