CVE-2026-9749

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

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...

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...