CVE-2026-5536CWE-20CWE-502

FedML-AI FedML gRPC server grpc_server.py sendMessage deserialization

Medium · published April 5, 2026

CVSS v4.0
6.9
EPSS
1%
Percentile
49.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
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
EPSS
0.00622 · 49.1th percentile
Weaknesses
CWE-20 · Improper Input Validation; CWE-502 · Deserialization of Untrusted Data
Published
2026-04-05T02:45Z
EPSS history
Timeline
  • 05 APR 02:45Z
    FedML-AI FedML gRPC server grpc_server.py sendMessage deserialization
    cvelistv5