kvcache-ai mooncake up to 0.3.12/0.3.13.post1 RPC Path UnmountSegment client_id/segment_id authorization

Summaryinfo

A vulnerability was found in kvcache-ai mooncake up to 0.3.12/0.3.13.post1. It has been declared as critical. This vulnerability affects the function UnmountSegment of the component RPC Path Handler. Such manipulation of the argument client_id/segment_id leads to authorization. This vulnerability is documented as CVE-2026-96762. The attack can be executed remotely. Additionally, an exploit exists. The vendor was contacted early about this disclosure but did not respond in any way.

Detailsinfo

A vulnerability, which was classified as critical, has been found in kvcache-ai mooncake up to 0.3.12/0.3.13.post1. Affected by this issue is the function UnmountSegment of the component RPC Path Handler. The manipulation of the argument client_id/segment_id with an unknown input leads to a authorization vulnerability. Using CWE to declare the problem leads to CWE-639. The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data. Impacted is confidentiality, integrity, and availability.

The advisory is shared for download at gist.github.com. This vulnerability is handled as CVE-2026-96762. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details as well as a public exploit are known.

The exploit is available at gist.github.com. It is declared as proof-of-concept. The vendor was contacted early about this disclosure but did not respond in any way.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Artificial Intelligence Software

Vendor

• kvcache-ai

Name

• mooncake

Version

• 0.3.0
• 0.3.1
• 0.3.2
• 0.3.3
• 0.3.4
• 0.3.5
• 0.3.6
• 0.3.7
• 0.3.8
• 0.3.9
• 0.3.10
• 0.3.11
• 0.3.12
• 0.3.13.post1

CPE 2.3info

• 🔒
• 🔒
• 🔒

CPE 2.2info

• 🔒
• 🔒
• 🔒

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Exploitinginfo

Threat Intelligenceinfo

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Submitinfo

Accepted

• Submit #904600: kvcache-ai Mooncake >= 0.3.4, <= 0.3.12 Authorization Bypass (by YYYMK)

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