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model_dump(exclude_unset=True) produces spurious warnings for Union members with unset defaults

bug V2Bug related to Pydantic V2Bug related to Pydantic V2

Status: Open.

#12888 In pydantic/pydantic;

· alexmojaki opened on Mar 2, 2026

Support memoryview in model_validate_json

deferredDeferred until future release or until something else gets doneDeferred until future release or until something else gets done

feature request

Status: Open.

#12886 In pydantic/pydantic;

· teskje opened on Mar 2, 2026

extra='allow' can let alias/name collisions overwrite validated field output during serialization

bug V2Bug related to Pydantic V2Bug related to Pydantic V2

topic-serializationHow Pydantic serializes data, often related to `model_dump`, etc.How Pydantic serializes data, often related to `model_dump`, etc.

v3Under consideration for V3Under consideration for V3

Status: Open.

#12884 In pydantic/pydantic;

· yangbaechu opened on Mar 2, 2026

Segmentation fault during interpreter shutdown.

bug V2Bug related to Pydantic V2Bug related to Pydantic V2

pendingIs unconfirmedIs unconfirmed

Status: Open.

#12867 In pydantic/pydantic;

· fofoni opened on Feb 26, 2026

Use a distinct error type for EmailStr validation instead of generic value_error

feature request

v3Under consideration for V3Under consideration for V3

Status: Open.

#12807 In pydantic/pydantic;

· Teraskull opened on Feb 16, 2026

Exponential perfomance drop (100k%) for edge cases serialization in pydantic>=2.11.0b1 (0.044 seconds -> 183.207 seconds)

bug V2Bug related to Pydantic V2Bug related to Pydantic V2

Status: Open.

#12800 In pydantic/pydantic;

· Danipulok opened on Feb 12, 2026

Allow model-like types as fields to be serialized as instances/as-is

feature request

topic-serializationHow Pydantic serializes data, often related to `model_dump`, etc.How Pydantic serializes data, often related to `model_dump`, etc.

topic-validators-serializersRelated to model/field validators/serializersRelated to model/field validators/serializers

Status: Open.

#12774 In pydantic/pydantic;

· gpetretto opened on Feb 5, 2026

Setting 'on_error': 'omit' on typed-dict values omits valid strings when using smart union mode.

bug V2Bug related to Pydantic V2Bug related to Pydantic V2

pendingIs unconfirmedIs unconfirmed

Status: Open.

#12750 In pydantic/pydantic;

· mikeedjones opened on Jan 28, 2026

Publish wheels for Android and iOS on PyPI

deferredDeferred until future release or until something else gets doneDeferred until future release or until something else gets done

feature request

Status: Open.

#12739 In pydantic/pydantic;

· IsakTheHacker opened on Jan 24, 2026

Issue when calling wrap validator handler twice and using model's __init__()

topic-validationRelated to how Pydantic validates data against provided typesRelated to how Pydantic validates data against provided types

Status: Open.

#12730 In pydantic/pydantic;

· Viicos opened on Jan 21, 2026

model_validate_strings() does not respect custom __init__()

bug V2Bug related to Pydantic V2Bug related to Pydantic V2

Status: Open.

#12718 In pydantic/pydantic;

· Viicos opened on Jan 17, 2026

model_validate_strings() for complex types

feature request

Status: Open.

#12717 In pydantic/pydantic;

· Viicos opened on Jan 17, 2026