CVE-2026-103761: Kvcache-Ai Mooncake

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

Mooncake transfer engine through 0.3.13.post1 contains a memory exhaustion vulnerability in TransferMetadata::receivePeerNotify that allows unauthenticated attackers to grow process memory without limit. Attackers can repeatedly send notify frames up to 1 MB to the handshake RPC port, filling the uncapped notifys vector until the out-of-memory killer terminates the engine.

Affected products

• Kvcache-Ai Mooncake: up to and including 0.3.13.post1

Published 2026-10-01. Last modified 2026-10-06.