{"id":"CVE-2026-103760","title":"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","summary":"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 ha…","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400"],"vendor":"kvcache-ai","product":"Mooncake","affected":["Mooncake <= 0.3.13.post1"],"published":"2026-10-01","updated":"2026-10-02","sourceUpdated":"2026-10-02T18:00:34.733","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103760","references":[{"url":"https://github.com/kvcache-ai/Mooncake","label":"disclosure@vulncheck.com"},{"url":"https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-transfer-engine/src/transfer_metadata_plugin.cpp#L730-L803","label":"disclosure@vulncheck.com"},{"url":"https://github.com/kvcache-ai/Mooncake/issues/4443","label":"disclosure@vulncheck.com"},{"url":"https://www.vulncheck.com/advisories/mooncake-transfer-engine-through-0.3.13-post1-denial-of-service-via-p2p-handshake-daemon-response-write","label":"disclosure@vulncheck.com"},{"url":"https://github.com/kvcache-ai/Mooncake/issues/4443","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"epss":0.00506,"epssPercentile":0.43012,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-02T15:50:52.548193Z"},"ingestedAt":"2026-10-01T23:03:32.834Z","slug":"CVE-2026-103760","body":"## Overview\n\nMooncake 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":45,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":214982,"id":"CVE-2026-103760","ts":1790958217481,"field":"exploit_available","old":"false","new":"true"}]}