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Vulnerability · Published Sep 14, 2026 · Assigned by VulDB

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

Medium 6.3

In plain English

A medium-severity unsafe deserialization in FedML from FedML-AI. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 37% of all known vulnerabilities).

Severity (CVSS 3.1)6.3Medium
Exploit odds (30 days)0.4%top 62.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

VendorProductVersions
FedML-AI FedML 0.9.00.9.10.9.20.9.30.9.40.9.50.9.6

Weakness: CWE-502, CWE-20 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:X/RL:X/RC:R

References