CVE-2026-103760: Kvcache-Ai Mooncake

Medium severity, CVSS 5.9. EPSS: 0.4% chance of exploitation in the next 30 days.

Mooncake transfer engine through 0.3.13.post1 contains a denial of service vulnerability that allows unauthenticated remote attackers to block the handshake daemon by never reading replies. Attackers can send a Metadata request to the handshake RPC port and stall SocketHandShakePlugin's single listener thread in writeFully(), breaking all subsequent handshakes, metadata fetches, notify and probe requests.

Affected products

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

Published 2026-10-01. Last modified 2026-10-02.