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.
Details
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Affected Packages
| Software | From version | Fixed in |
|---|---|---|
| python-marshmallow | — | 3.26.1-0.4ubuntu0.1~esm1 |
References
Similar Threats
- Unknown USN-8225-1
- Unknown openSUSE-SU-2026:20087-1
- Unknown SUSE-SU-2026:0226-1
- Unknown SUSE-SU-2026:20130-1
- Unknown openSUSE-SU-2026:10003-1
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