CVE-2026-96764
Received Received - Intake

Memory Exhaustion in kvcache-ai mooncake

Publication date: 2026-09-24

Last updated on: 2026-09-24

Assigner: VulDB

Description
A weakness has been identified in kvcache-ai mooncake up to 0.3.12/0.3.14-rc1. Impacted is the function MasterService::GetReplicaListByRegex of the component Regular Expression Handler. Executing a manipulation can lead to allocation of resources. The attack may be performed from remote. The exploit has been made available to the public and could be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

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Meta Information

Published
2026-09-24
Last Modified
2026-09-24
Generated
2026-09-24
AI Q&A
2026-09-24
EPSS Evaluated
N/A
NVD
CVE-2026-96764
EUVD
EUVD-2026-85753

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
kvcache-ai mooncake to 0.3.12 (inc)
kvcache-ai mooncake to 0.3.14-rc1 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.
CWE-770 The product allocates a reusable resource or group of resources on behalf of an actor without imposing any intended restrictions on the size or number of resources that can be allocated.

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Executive Summary

CVE-2026-96764 is a low-rate denial of service vulnerability in kvcache-ai mooncake up to version 0.3.12/0.3.14-rc1. It involves the MasterService::GetReplicaListByRegex function where a manipulated regular expression query can cause excessive resource allocation. The attack is remotely executable and has been publicly disclosed.

Detection Guidance

Monitor for unusually high rates of regex queries, especially broad patterns like '.*', which may indicate exploitation. Check for increased lease grants and failed Put operations in Mooncake Store logs. Look for memory pressure or eviction failures in system metrics.

Impact Analysis

This vulnerability can lead to denial of service by consuming excessive system resources. Attackers can send crafted regex queries to prevent normal memory eviction, causing failed operations like Put requests when the system is near capacity. Just five queries over ten seconds can significantly degrade performance.

Compliance Impact

This vulnerability does not directly impact compliance with GDPR or HIPAA as it involves a denial of service through resource exhaustion rather than unauthorized data access or disclosure. However, if the affected system processes personal or health data, repeated service disruptions could indirectly affect availability requirements under these regulations.

Mitigation Strategies

Implement rate limiting on regex queries, especially broad patterns. Disable or restrict lease grant logic for regex queries. Update to a patched version if available. Monitor system performance and eviction behavior closely.

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