CVE-2025-68480 — Marshmallow has DoS in Schema.load(many)
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.…
Published: 2025-12-22 · CVSS: 5.3 · CVSS 3.1
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 · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7