CVE-2025-68480
Marshmallow has DoS in Schema.load(many)
5.3
MEDIUM
CVSS 3.1
EPSS 0.11%
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.
How to fix CVE-2025-68480
To remediate CVE-2025-68480, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 3.26.2 or later
Is CVE-2025-68480 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0
- >= 3.0.0rc1, < 3.26.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |