Marshmallow has DoS in Schema.load(many)_CVE-2025-68480

5.3 / 10

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Description

Marshmallow is a lightweight library for converting complex objects to and from simple Python datatypes. In versions from 3.0.0rc1 to before 3.26.2 and from 4.0.0 to before 4.1.2, Schema.load(data, many=True) is vulnerable to denial of service attacks. A moderately sized request can consume a disproportionate amount of CPU time. This issue has been patched in version 3.26.2 and 4.1.2.

Basic Information

ID CVE-2025-68480

Source GitHub_M

Published Dec 22, 2025 at 21:20

Modified Dec 22, 2025 at 21:35

Affected Product

Vendor marshmallow-code

Product marshmallow

Version >= 3.0.0rc1, < 3.26.2

Affected Versions marshmallow-code marshmallow >= 3.0.0rc1, < 3.26.2
marshmallow-code marshmallow >= 4.0.0, < 4.1.2

CWE Classification

CWE-405

References

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    "published": "2025-12-22T21:20:15.958Z",
    "modified": "2025-12-22T21:35:02.469Z",
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