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optimisticConcurrency paths don't match map wildcards or subdocument array paths

Status: Open.

#16383 In Automattic/mongoose;

· AbdelrahmanHafez opened on Jul 9, 2026

[Suggestion] optimisticConcurrency: { include: [] } as an alias to optimisticConcurrency: []

enhancementThis issue is a user-facing general improvement that doesn't fix a bug or add a new featureThis issue is a user-facing general improvement that doesn't fix a bug or add a new feature

Status: Open.

#16382 In Automattic/mongoose;

· AbdelrahmanHafez opened on Jul 9, 2026

Recommended pattern for typing service-layer methods returning .populate().lean() results

helpThis issue can likely be resolved in GitHub issues. No bug fixes, features, or docs necessaryThis issue can likely be resolved in GitHub issues. No bug fixes, features, or docs necessary

help wanted

Status: Open.

#16381 In Automattic/mongoose;

· WojakGra opened on Jul 9, 2026

Document.isModified(path) rebuilds the full modifiedPaths() set on every call — O(N^2) when checked per-path in loops (including mongoose's own validation)

Status: Open.

#16379 In Automattic/mongoose;

· tsushanth opened on Jul 8, 2026

toObject()/toJSON() walks the entire schema path list per call via applySchemaTypeTransforms, even when no path has a transform

Status: Open.

#16378 In Automattic/mongoose;

· tsushanth opened on Jul 8, 2026

Document constructor rescans every schema path via requiredPaths(true) on each instantiation — O(schemaPaths) per doc, O(docs x paths) per query

Status: Open.

#16377 In Automattic/mongoose;

· tsushanth opened on Jul 8, 2026

Geo query with an object-shaped value throws Cannot use [object Object] with Number (wrong castForQuery argument shape)

Status: Open.

#16376 In Automattic/mongoose;

· tsushanth opened on Jul 8, 2026

toObject({getters:true}) on projected documents: applyGetters iterates all schema paths and each unselected path triggers an O(projectionKeys) isSelected scan — O(paths x projection) per doc

Status: Open.

#16373 In Automattic/mongoose;

· tsushanth opened on Jul 7, 2026

Disallow NaN as a value for BSON double

backwards-breaking

discussionIf you have any thoughts or comments on this issue, please share them!If you have any thoughts or comments on this issue, please share them!

Status: Open.

#16365 In Automattic/mongoose;

· vkarpov15 opened on Jul 6, 2026

·  

10.0

validateSync middleware cycle

backwards-breaking

Status: Open.

#16291 In Automattic/mongoose;

· AbdelrahmanHafez opened on May 21, 2026

·  

10.0

CI: fix/improve flaky tests

Status: Open.

#16284 In Automattic/mongoose;

· AbdelrahmanHafez opened on May 13, 2026

Support for schema-driven deep population of all referenced paths without requiring explicit path specification

enhancementThis issue is a user-facing general improvement that doesn't fix a bug or add a new featureThis issue is a user-facing general improvement that doesn't fix a bug or add a new feature

new featureThis change adds new functionality, like a new method or classThis change adds new functionality, like a new method or class

Status: Open.

#16074 In Automattic/mongoose;

· jml6m opened on Mar 6, 2026