What’s Vulnerable › Vulnerabilities

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

• Severity: high (CVSS 7.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-04-05 · updated 2026-07-24
• Weakness: CWE-20

Description

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.

Affected products

• FedML-AI FedML: through 0.8.9

References

• https://github.com/AnalogyC0de/public_exp/issues/26
• https://vuldb.com/submit/782201
• https://vuldb.com/vuln/355289
• https://vuldb.com/vuln/355289/cti

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