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CVE-2025-68480

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CVE-2025-68480

Published: Dec 22, 2025

Modified: Dec 22, 2025

PUBLISHED

CVSS v3.1

5.3

MEDIUM

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.

VendorProductVersions

marshmallow-code

marshmallow

affected
>= 3.0.0rc1, < 3.26.2
affected
>= 4.0.0, < 4.1.2

Weaknesses (CWE)

CWE-405

CVSS v3.1 Details

CVSS v3.1 Vector

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

Low

References

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