CVE-2026-9747 Crafted cross-shard merge aggregation crashes MongoDB Server

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

CVE-2026-9747 Crafted cross-shard merge aggregation crashes MongoDB Server

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

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...