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

Quick assessment

Affected
marshmallow-code marshmallow
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

marshmallow是marshmallow-code开源的一个数据类型转换库。 marshmallow 3.26.2之前版本和4.1.2之前版本存在安全漏洞，该漏洞源于Schema.load函数存在拒绝服务问题。

CVSS 5.3 · Medium EPSS 0.29% · P21

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking
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I. Basic Information for CVE-2025-68480

Vulnerability Information
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Vulnerability Title
Marshmallow has DoS in Schema.load(many)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
不对称的资源消耗(放大攻击)
Source: CVE Program / CVE List V5
Vulnerability Title
marshmallow 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
marshmallow是marshmallow-code开源的一个数据类型转换库。 marshmallow 3.26.2之前版本和4.1.2之前版本存在安全漏洞，该漏洞源于Schema.load函数存在拒绝服务问题。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
marshmallow-code marshmallow >= 3.0.0rc1, < 3.26.2 -

II. Public POCs for CVE-2025-68480

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III. Intelligence Information for CVE-2025-68480

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IV. Related Vulnerabilities

Same weakness: CWE-405

V. Comments for CVE-2025-68480

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