CVE-2026-103764
CRITICAL
CVSS 9.8
Published: 2026-10-02
Modified: 2026-10-02
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Description
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.
Quick Facts
| CVE ID | CVE-2026-103764 |
| CVSS Score | 9.8 |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| Published | 2026-10-02 |
| Exploited | No |
| CISA KEV | No |
| PoC | Not public |
References
- https://github.com/kvcache-ai/Mooncake
- https://github.com/kvcache-ai/Mooncake/blob/6041a609a8c3af35…
- https://github.com/kvcache-ai/Mooncake/commit/a2933849417259…
- https://github.com/kvcache-ai/Mooncake/issues/4441
- https://github.com/kvcache-ai/Mooncake/releases/tag/v0.3.13
- https://www.vulncheck.com/advisories/mooncake-transfer-engin…
- https://github.com/kvcache-ai/Mooncake/issues/4441