CVE-2024-10190: Horovod

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

Horovod versions up to and including v0.28.1 are vulnerable to unauthenticated remote code execution. The vulnerability is due to improper handling of base64-encoded data in the `ElasticRendezvousHandler`, a subclass of `KVStoreHandler`. Specifically, the `_put_value` method in `ElasticRendezvousHandler` calls `codec.loads_base64(value)`, which eventually invokes `cloudpickle.loads(decoded)`. This allows an attacker to send a malicious pickle object via a PUT request, leading to arbitrary code execution on the server.

Affected products

• Horovod Horovod: up to and including 0.28.1

Published 2025-03-20. Last modified 2026-06-17.