CVE-2026-103760: Uncontrolled Resource Consumption in kvcache-ai Mooncake
CVE-2026-103760 is a denial of service vulnerability in the Mooncake transfer engine up to version 0.3.13.post1. It allows unauthenticated remote attackers to block the handshake daemon by sending a Metadata request that stalls the single listener thread, preventing further handshake and metadata operations.
AI Analysis
Technical Summary
Mooncake transfer engine versions up to 0.3.13.post1 contain a denial of service vulnerability where unauthenticated remote attackers can send a Metadata request to the handshake RPC port. This request causes the SocketHandShakePlugin's single listener thread to stall in the writeFully() function by never reading replies, effectively blocking the handshake daemon. This denial of service breaks all subsequent handshakes, metadata fetches, notify, and probe requests, disrupting normal operation.
Potential Impact
The vulnerability allows remote unauthenticated attackers to cause a denial of service by blocking the handshake daemon, which halts all handshake and metadata-related communications. This can disrupt the normal functioning of the Mooncake transfer engine, potentially impacting availability of services relying on it.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
CVE-2026-103760: Uncontrolled Resource Consumption in kvcache-ai Mooncake
Description
CVE-2026-103760 is a denial of service vulnerability in the Mooncake transfer engine up to version 0.3.13.post1. It allows unauthenticated remote attackers to block the handshake daemon by sending a Metadata request that stalls the single listener thread, preventing further handshake and metadata operations.
CVSS v4.0
Score 8.2high
Affected software
kvcache-ai
Mooncake
pkg:github/kvcache-ai/MooncakeRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Mooncake transfer engine versions up to 0.3.13.post1 contain a denial of service vulnerability where unauthenticated remote attackers can send a Metadata request to the handshake RPC port. This request causes the SocketHandShakePlugin's single listener thread to stall in the writeFully() function by never reading replies, effectively blocking the handshake daemon. This denial of service breaks all subsequent handshakes, metadata fetches, notify, and probe requests, disrupting normal operation.
Potential Impact
The vulnerability allows remote unauthenticated attackers to cause a denial of service by blocking the handshake daemon, which halts all handshake and metadata-related communications. This can disrupt the normal functioning of the Mooncake transfer engine, potentially impacting availability of services relying on it.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulnCheck
- Date Reserved
- 2026-10-01T10:39:47.845Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6abee66fa43b0b3b890f1cf7
Added to database: 10/01/2026, 23:02:07 UTC
Last enriched: 10/01/2026, 23:16:05 UTC
Last updated: 10/02/2026, 00:06:44 UTC
Views: 9
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