Upstream information
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.SUSE information
Overall state of this security issue: Pending
This issue is currently rated as having moderate severity.
| CVSS detail | CNA (GitHub) | SUSE |
|---|---|---|
| Base Score | 5.3 | 5.3 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L |
| Attack Vector | Network | Network |
| Attack Complexity | Low | Low |
| Privileges Required | None | None |
| User Interaction | None | None |
| Scope | Unchanged | Unchanged |
| Confidentiality Impact | None | None |
| Integrity Impact | None | None |
| Availability Impact | Low | Low |
| CVSSv3 Version | 3.1 | 3.1 |
| CVSS detail | SUSE |
|---|---|
| Base Score | 6.3 |
| Vector | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N |
| Attack Vector | Network |
| Attack Complexity | Low |
| Attack Requirements | Present |
| Privileges Required | None |
| User Interaction | None |
| Vulnerable System Confidentiality Impact | None |
| Vulnerable System Integrity Impact | None |
| Vulnerable System Availability Impact | Low |
| Subsequent System Confidentiality Impact | None |
| Subsequent System Integrity Impact | None |
| Subsequent System Availability Impact | None |
| CVSSv4 Version | 4.0 |
Status of this issue by product and package
Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.
| Product(s) | Source package | State |
|---|---|---|
| Products under general support and receiving all security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP6 | python-marshmallow | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP7 | python-marshmallow | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP6 | python-marshmallow | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP7 | python-marshmallow | Affected |
| SUSE Linux Enterprise Server 15 SP6 | python-marshmallow | Affected |
| SUSE Linux Enterprise Server 15 SP7 | python-marshmallow | Affected |
| SUSE Linux Enterprise Server 16.0 | python-marshmallow | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP6 | python-marshmallow | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP7 | python-marshmallow | Affected |
| SUSE Linux Enterprise Server for SAP applications 16.0 | python-marshmallow | Affected |
| openSUSE Leap 15.6 | python-marshmallow | Affected |
| Products under Long Term Service Pack support and receiving important and critical security fixes. | ||
| SUSE Linux Enterprise High Performance Computing 15 SP4 | python-marshmallow | Affected |
| SUSE Linux Enterprise High Performance Computing 15 SP5 | python-marshmallow | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP4 | python-marshmallow | Affected |
| SUSE Linux Enterprise Module for Public Cloud 15 SP5 | python-marshmallow | Affected |
| SUSE Linux Enterprise Server 15 SP4 | python-marshmallow | Affected |
| SUSE Linux Enterprise Server 15 SP5 | python-marshmallow | Affected |
| SUSE Manager Proxy 4.3 | python-marshmallow | Affected |
| SUSE Manager Retail Branch Server 4.3 | python-marshmallow | Affected |
| SUSE Manager Server 4.3 | python-marshmallow | Affected |
| Products past their end of life and not receiving proactive updates anymore. | ||
| SUSE Linux Enterprise Server for SAP Applications 15 SP4 | python-marshmallow | Affected |
| SUSE Linux Enterprise Server for SAP Applications 15 SP5 | python-marshmallow | Affected |
| openSUSE Leap 15.5 | python-marshmallow | Affected |
| Products at an unknown state of their lifecycle. | ||
| SUSE Linux Enterprise Server for SAP Applications 16.0 | python-marshmallow | Affected |
SUSE Timeline for this CVE
CVE page created: Tue Dec 23 00:03:16 2025CVE page last modified: Tue Dec 23 12:33:01 2025