CVE-2025-68480 (CVSS 5.3)

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.

Is your site exposed to CVE-2025-68480?

Run a free security scan — no signup, results in seconds.

CVSS v3.1 Score

5.3

MEDIUM

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

Weakness Type (CWE)

CWE-405 CWE-405

References

Other References

https://github.com/marshmallow-code/marshmallow/commit/d24a0c9df061c4daa92f71cf85aca25b83eee508 https://github.com/marshmallow-code/marshmallow/security/advisories/GHSA-428g-f7cq-pgp5

Frequently Asked Questions

What is CVE-2025-68480? +

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. It has a CVSS v3.1 base score of 5.3 (MEDIUM).

How severe is CVE-2025-68480? +

CVE-2025-68480 has a CVSS v3.1 score of 5.3 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

How do I check if I'm vulnerable to CVE-2025-68480? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

Related Vulnerabilities

CVE-2025-32394

AutoGPT is a workflow automation platform for creating, deploying, and managing continuous artificial intelligence agents. Prior to 0.6.32, there is …

CVE-2025-53633 9.8

Chall-Manager is a platform-agnostic system able to start Challenges on Demand of a player. When decoding a scenario (i.e. a …

CVE-2024-56200 8.6

Altair is a fork of Misskey v12. Affected versions lack of request validation and lack of authentication in the image …

CVE-2025-42874 7.9

SAP NetWeaver remote service for Xcelsius allows an attacker with network access and high privileges to execute arbitrary code on …

CVE-2024-55628 7.5

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.8, DNS …

CVE-2025-24356 7.5

fastd is a VPN daemon which tunnels IP packets and Ethernet frames over UDP. When receiving a data packet from …

CVE-2025-68480