CVE-2026-26210: Kvcache-Ai Ktransformers

Critical severity, CVSS 9.8. EPSS: 1% chance of exploitation in the next 30 days.

KTransformers through 0.5.3 contains an unsafe deserialization vulnerability in the balance_serve backend mode where the scheduler RPC server binds a ZMQ ROUTER socket to all interfaces with no authentication and deserializes incoming messages using pickle.loads() without validation. Attackers can send a crafted pickle payload to the exposed ZMQ socket to execute arbitrary code on the server with the privileges of the ktransformers process.

Affected products

• Kvcache-Ai Ktransformers: up to and including 0.5.3

Published 2026-04-23. Last modified 2026-07-14.