kvcache-ai Mooncake up to 0.3.11 Handshake include/common.h readString out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k1.15-

Summaryinfo

A vulnerability described as problematic has been identified in kvcache-ai Mooncake up to 0.3.11. This affects the function readString of the file include/common.h of the component Handshake. The manipulation results in out-of-bounds. This vulnerability is known as CVE-2026-104433. It is possible to launch the attack remotely. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in kvcache-ai Mooncake up to 0.3.11. It has been classified as problematic. Affected is the function readString of the file include/common.h of the component Handshake. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on availability. CVE summarizes:

Mooncake transfer engine before 0.3.12 contains an out-of-bounds read vulnerability in the readString function of include/common.h that allows unauthenticated attackers to crash the service by sending a zero-length handshake frame. Attackers can connect to the handshake port listening on all interfaces and send an eight-byte frame to terminate the hosting process, such as an SGLang inference server.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-104433 since 10/02/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

Upgrading to version 0.3.12 eliminates this vulnerability.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (VulnCheck): 🔒

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Mooncake 0.3.12

Timelineinfo

10/02/2026 CVE reserved
10/02/2026 +0 days VulDB entry created
10/03/2026 +0 days Advisory disclosed
10/03/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-104433 (🔒)
GCVE (CVE): GCVE-0-2026-104433
GCVE (VulDB): GCVE-100-413250

Entryinfo

Created: 10/03/2026 01:46
Changes: 10/03/2026 01:46 (79)
Complete: 🔍
Cache ID: 216::103

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