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

{
  "id": "a3610da660b63774b330fef694486e86b136bcaf92ce67e9cab5393efff61749",
  "url": "https://osv.dev/vulnerability/CVE-2026-103760",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Mooncake transfer engine through 0.3.13.post1 Denial of Service via P2P Handshake Daemon Response Write",
    "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 handshake RPC port and stall SocketHandShakePlugin's single listener thread in writeFully(), breaking all subsequent handshakes, metadata fetches, notify and probe requests.",
    "evidence": "osv:CVE-2026-103760",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-103760",
      "aliases": [
        "CVE-2026-103760"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/kvcache-ai/mooncake",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "last_affected": "719735896c86b56fabec6cf3e825fb2ea640597a"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.3.13.post1"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "0.3.13.post1"
                      }
                    ],
                    "source": "DESCRIPTION"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.3.13.post1",
            "v0.3.13-rc2",
            "v0.3.13-rc1",
            "v0.3.13",
            "v0.3.12.post1",
            "v0.3.11-rc1",
            "v0.3.11.post1",
            "v0.3.11",
            "v0.3.10.post2",
            "v0.3.10.post1",
            "v0.3.10",
            "v0.3.9",
            "v0.3.8.post1",
            "v0.3.8",
            "v0.3.7.post2",
            "v0.3.7.post1",
            "v0.3.7",
            "v0.3.6.post1",
            "v0.3.6",
            "v0.3.5",
            "v0.3.4.post2",
            "v0.3.4.post1",
            "v0.3.4",
            "v0.3.3.post2",
            "v0.3.3.post1",
            "v0.3.3",
            "v0.3.2.post1",
            "v0.3.2",
            "v0.3.1",
            "v0.3.0",
            "v0.3.0-beta",
            "v0.3.0-alpha",
            "v0.2.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-103760.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.025252513Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103760.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-103760",
        "https://www.vulncheck.com/advisories/mooncake-transfer-engine-through-0.3.13-post1-denial-of-service-via-p2p-handshake-daemon-response-write",
        "https://github.com/kvcache-ai/Mooncake/issues/4443",
        "https://github.com/kvcache-ai/Mooncake",
        "https://github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mooncake-transfer-engine/src/transfer_metadata_plugin.cpp#L730-L803"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-400"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103760.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-103760",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504235,
  "published_at": "2026-10-01T22:53:05.201+00:00"
}