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MDE2OlNlY3VyaXR5QWR2aXNvcnlHSFNBLTlxMnAtZmo0OS12cHhq

Moderate CVSS: 6.9 EPSS: 0.00189% (0.41057 Percentile) EPSS:

In marshmallow library the schema "only" option treats an empty list as implying no "only" option

Affected Packages Affected Versions Fixed Versions
pypi:marshmallow
PURL: pkg:pypi/marshmallow
< 2.15.1 2.15.1
705 Dependent packages
22,877 Dependent repositories
84,378,711 Downloads last month

Affected Version Ranges

All affected versions

0.1.0, 0.2.0, 0.2.1, 0.3.0, 0.3.1, 0.4.0, 0.4.1, 0.5.0, 0.5.1, 0.5.2, 0.5.3, 0.5.4, 0.5.5, 0.6.0, 0.7.0, 1.0.0, 1.0.1, 1.1.0, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 1.2.4, 1.2.5, 1.2.6, 2.0.0, 2.1.0, 2.1.1, 2.1.2, 2.1.3, 2.2.0, 2.2.1, 2.3.0, 2.4.0, 2.4.1, 2.4.2, 2.5.0, 2.6.0, 2.6.1, 2.7.0, 2.7.1, 2.7.2, 2.7.3, 2.8.0, 2.9.0, 2.9.1, 2.10.0, 2.10.1, 2.10.2, 2.10.3, 2.10.4, 2.10.5, 2.11.0, 2.11.1, 2.12.0, 2.12.1, 2.12.2, 2.13.0, 2.13.1, 2.13.2, 2.13.3, 2.13.4, 2.13.5, 2.13.6, 2.14.0, 2.15.0

All unaffected versions

2.15.1, 2.15.2, 2.15.3, 2.15.4, 2.15.5, 2.15.6, 2.16.0, 2.16.1, 2.16.2, 2.16.3, 2.17.0, 2.18.0, 2.18.1, 2.19.0, 2.19.1, 2.19.2, 2.19.3, 2.19.4, 2.19.5, 2.20.0, 2.20.1, 2.20.2, 2.20.3, 2.20.4, 2.20.5, 2.21.0, 3.0.0, 3.0.1, 3.0.2, 3.0.3, 3.0.4, 3.0.5, 3.1.0, 3.1.1, 3.2.0, 3.2.1, 3.2.2, 3.3.0, 3.4.0, 3.5.0, 3.5.1, 3.5.2, 3.6.0, 3.6.1, 3.7.0, 3.7.1, 3.8.0, 3.9.0, 3.9.1, 3.10.0, 3.11.0, 3.11.1, 3.12.0, 3.12.1, 3.12.2, 3.13.0, 3.14.0, 3.14.1, 3.15.0, 3.16.0, 3.17.0, 3.17.1, 3.18.0, 3.19.0, 3.20.0, 3.20.1, 3.20.2, 3.21.0, 3.21.1, 3.21.2, 3.21.3, 3.22.0, 3.23.0, 3.23.1, 3.23.2, 3.23.3, 3.24.0, 3.24.1, 3.24.2, 3.25.0, 3.25.1, 3.26.0, 3.26.1, 4.0.0, 4.0.1

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").

References: