Safety vulnerability ID: 36496
The information on this page was manually curated by our Cybersecurity Intelligence Team.
In the marshmallow library before 2.15.1 and 3.x before 3.0.0b9 for Python, the schema "only" option treats an empty list as implying no "only" option, which allows a request that was intended to expose no fields to instead expose all fields (if the schema is being filtered dynamically using the "only" option, and there is a user role that produces an empty value for "only").
Latest version: 3.21.2
A lightweight library for converting complex datatypes to and from native Python datatypes.
In the marshmallow library before 2.15.1 and 3.x before 3.0.0b9 for Python, the schema "only" option treats an empty list as implying no "only" option, which allows a request that was intended to expose no fields to instead expose all fields (if the schema is being filtered dynamically using the "only" option, and there is a user role that produces an empty value for "only").
MISC:https://github.com/marshmallow-code/marshmallow/issues/772: https://github.com/marshmallow-code/marshmallow/issues/772
MISC:https://github.com/marshmallow-code/marshmallow/pull/777: https://github.com/marshmallow-code/marshmallow/pull/777
MISC:https://github.com/marshmallow-code/marshmallow/pull/782: https://github.com/marshmallow-code/marshmallow/pull/782
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