Use of "infinity" as an input to datetime and date fields causes infinite loop in pydantic
ImpactPassing either 'infinity', 'inf' or float('inf') (or their negatives) to datetime or date fields causes validation to run forever with 100% CPU usage (on one CPU).
PatchesPydantic is be patched with fixes available in the following versions:All these versions are available on pypi, and will be available on conda-forge soon.See the changelog for details.
WorkaroundsIf you absolutely can't upgrade, you can work around this risk using a validator to catch these values, brief demo:from datetime import date
from pydantic import BaseModel, validatorclass DemoModel(BaseModel):
    date_of_birth: dateNote: this is not an ideal solution (in particular you'll need a slightly different function for datetimes), instead of a hack like this you should upgrade pydantic.If you are not using v1.8.x, v1.7.x or v1.6.x and are unable to upgrade to a fixed version of pydantic, please create an issue requesting a back-port, and we will endeavour to release a patch for earlier versions of pydantic.
ReferencesThis was fixed in commit 7e83fdd.