CVE-2026-103760
Mooncake transfer engine through 0.3.13.post1 Denial of Service via P2P Handshake Daemon Response Write
kvcache-ai Mooncake
CVSS
8.2HighExploitationPublic exploit codeCISA's assessment says proof of concept code is public, assessed 2 Oct 2026. Not in the KEV catalogCISA via CVE List
Exploit odds (EPSS)0.40%Chance of exploitation activity in the next 30 days, higher than 33% of CVEs. Scored 23 Oct 2026FIRST EPSS
Fixed inNone listedNo source names a fixed version. Check the vendor advisory below
What fixes it
No source in this snapshot names a fixed version. The vendor advisories under References are the place to check.
Description
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.
Text from CVE List
Affected versions 1
- Mooncakeaffected: all versions through 0.3.13.post1CVE List
References 4
- vulncheck.com/advisories/mooncake-transfer-engine-through-0.3.13-post1-denial-of-service-via-p2p-handshake-daemon-response-writeAdvisoryvia CVE List
- github.com/kvcache-ai/Mooncake/issues/4443Exploitvia CVE List
- github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-transfer-engine/src/transfer_metadata_plugin.cpp#L730-L803Referencevia CVE List
- github.com/kvcache-ai/MooncakeReferencevia CVE List