CVE-2026-5536 MEDIUM

CVE-2026-5536: FedML-AI FedML gRPC server grpc_server.py sendMessage deserialization

Vendor Fedml-Ai
Product FedML
Weakness CWE-502 · Unsafe deserialization
Published April 5, 2026
Last update April 6, 2026

CVSS base score

6.9/10
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:X

What the vulnerability does

01Description

A weakness has been identified in FedML-AI FedML up to 0.8.9. Affected is the function sendMessage of the file grpc_server.py of the component gRPC server. Executing a manipulation can lead to deserialization. The attack may be performed from remote. The vendor was contacted early about this disclosure but did not respond in any way.

Key dates

02Disclosure timeline

April 5, 2026 CVE published
April 6, 2026 Record updated