{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "0"
              },
              {
                "fixed": "0.3.13"
              }
            ],
            "source": [
              "DESCRIPTION",
              "REFERENCES"
            ]
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "e5598b0992cc258b06d22f24d875480e8931a28e"
            },
            {
              "fixed": "a2933849417259e562fc9cbad63c618d464dfb2d"
            }
          ],
          "repo": "https://github.com/kvcache-ai/mooncake",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
      "CWE-822"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103764.json"
  },
  "details": "Mooncake transfer engine before 0.3.13 contains an untrusted pointer dereference in ServerSession::readHeader that allows unauthenticated attackers to read and write arbitrary process memory via the TCP transport data port. Attackers can send a crafted SessionHeader with arbitrary addr and size values using READ or WRITE opcodes to disclose KV cache contents, prompts and secrets or corrupt memory toward code execution.",
  "id": "CVE-2026-103764",
  "modified": "2026-10-04T02:30:16.664501699Z",
  "published": "2026-10-01T23:19:57.849Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/103xxx/CVE-2026-103764.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/kvcache-ai/Mooncake/releases/tag/v0.3.13"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-103764"
    },
    {
      "type": "ADVISORY",
      "url": "https://www.vulncheck.com/advisories/mooncake-transfer-engine-before-0.3.13-unauthenticated-arbitrary-memory-read-write-via-tcp-transport"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/kvcache-ai/Mooncake/issues/4441"
    },
    {
      "type": "FIX",
      "url": "https://github.com/kvcache-ai/Mooncake/commit/a2933849417259e562fc9cbad63c618d464dfb2d"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/kvcache-ai/Mooncake"
    },
    {
      "type": "ARTICLE",
      "url": "https://github.com/kvcache-ai/Mooncake/blob/6041a609a8c3af35e778f70db344f145c2914980/mooncake-transfer-engine/src/transport/tcp_transport/tcp_transport.cpp#L209"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Mooncake transfer engine before 0.3.13 Unauthenticated Arbitrary Memory Read/Write via TCP Transport"
}