Resource exhaustion in Kvcache-Ai Mooncake
CVE-2026-103761
Mooncake transfer engine through 0.3.13.post1 contains a memory exhaustion vulnerability in TransferMetadata::receivePeerNotify that allows unauthenticated attackers to grow process memory without limit. Attackers can repeatedly send notify frames up to 1 MB to the handshake RPC port, filling the uncapped notifys vector until the out-of-memory killer terminates the engine.
Published .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/kvcache-ai/Mooncake/issues/4445 (issue-tracking)
- github.com/kvcache-ai/Mooncake/blob/719735896c86b56fabec6cf3e825fb2ea640597a/mo… (technical-description)
- github.com/kvcache-ai/Mooncake (product)
- www.vulncheck.com/advisories/mooncake-transfer-engine-through-0.3.13-post1-memo… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-103761?
- CVE-2026-103761 is a high-severity vulnerability in Kvcache-Ai Mooncake, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-10-01.
- How severe is CVE-2026-103761?
- High severity. CVSS v3 base score is 7.5 out of 10.