CVE-2026-90614 FedML-AI FedML MQTT+S3 Communication Backend remote_storage.py S3Storage.read_model deserialization
Remote attackers can execute arbitrary code via unsafe deserialization in the S3Storage.read_model function of the FedML library.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-90614?
CVE-2026-90614 is a medium-severity unsafe deserialization vulnerability in FedML-AI FedML, published on 14 Sep 2026. Any signed-in user can exploit it over the network, with no action from the victim.
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.
Which versions are affected by CVE-2026-90614?
How do I fix CVE-2026-90614?
No fix has been published for CVE-2026-90614 yet. Limit exposure of the affected software until one is available.
Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.
Is CVE-2026-90614 being exploited?
There is no known exploitation of CVE-2026-90614 in the wild and no public exploit code.
Sources
Also known as GHSA-96qh-x5p5-9v7x.