Medium 5.9Published Oct 1, 2026

CVE-2026-103760Mooncake transfer engine through 0.3.13.post1 Denial of Service via P2P Handshake Daemon Response Write

Updated under an hour ago (Oct 28, 2026, 2:40 PM ET)

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Every CVE for kvcache-ai Mooncake

Exploited in the last 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.

CVSS: 5.9 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness (CWE): CWE-400
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 2, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

kvcache-ai Mooncake kvcache_ai:mooncake (from the name)	through 0.3.13.post1	CNA record

References

References

https://github.com/kvcache-ai/Mooncake/issues/4443	issue-tracking
https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-transfer-engine/src/transfer_metadata_plugin.cpp#L730-L803	technical-description
https://github.com/kvcache-ai/Mooncake	product
https://www.vulncheck.com/advisories/mooncake-transfer-engine-through-0.3.13-post1-denial-of-service-via-p2p-handshake-daemon-response-write	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.