CVE-2026-5536

Name: CVE-2026-5536
Creator: NVD / NIST
Published: 2026-04-05T04:16:09.487+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.9/10EPSS 0.38%

Last modified Jun 17, 2026

CVE-2026-5536 is a medium-severity vulnerability rated 6.9/10 on the CVSS scale. 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. EPSS estimates a 0.38% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.3/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CVSS 4.0

6.9/10

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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.38%

29.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Tensoropera	Fedml	<= 0.8.9

References

https://github.com/AnalogyC0de/public_exp/issues/26Third Party Advisory
https://vuldb.com/submit/782201Third Party Advisory, VDB Entry
https://vuldb.com/vuln/355289Third Party Advisory, VDB Entry
https://vuldb.com/vuln/355289/ctiPermissions Required

Timeline

Published: Apr 5, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-5536?

How severe is CVE-2026-5536?

CVE-2026-5536 has a CVSS score of 6.9/10 (MEDIUM severity). The EPSS model estimates a 0.38% probability of exploitation in the next 30 days.

How do I fix CVE-2026-5536?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-5536?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST