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CVE-2026-90614— FedML-AI FedML MQTT+S3 Communication Backend remote_storage.py S3Storage.read_model deserialization

Quick assessment

Affected
FedML-AI FedML
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 FedML-AI FedML 0.9.6 及更早版本中已发现一处安全缺陷。该缺陷影响 MQTT+S3 通信后端组件中 文件里的 函数。对该函数参数 的处理过程中会发生反序列化操作，从而引入安全风险。此漏洞可被远程利用。项目方已通过问题报告提前获知该问题，但截至目前尚未作出回应。

CVSS 6.3 · Medium

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-90614

Vulnerability Information
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Vulnerability Title
FedML-AI FedML MQTT+S3 Communication Backend remote_storage.py S3Storage.read_model deserialization
Source: CVE Program / CVE List V5
Vulnerability Description
A weakness has been identified in FedML-AI FedML up to 0.9.6. Affected by this issue is the function S3Storage.read_model of the file fedml/core/distributed/communication/s3/remote_storage.py of the component MQTT+S3 Communication Backend. This manipulation of the argument s3_key_str causes deserialization. Remote exploitation of the attack is possible. The project was informed of the problem early through an issue report but has not responded yet.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
可信数据的反序列化
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
FedML-AI FedML 0.9.0 cpe:2.3:a:fedml-ai:fedml:*:*:*:*:*:*:*:*

II. Public POCs for CVE-2026-90614

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III. Intelligence Information for CVE-2026-90614

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Security Blog Posts for CVE-2026-90614 (1)

Other References for CVE-2026-90614 (1)

IV. Related Vulnerabilities

Same product: FedML
Same vendor: FedML-AI
Same weakness: CWE-502

V. Comments for CVE-2026-90614

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