High Access control exploit reference

CVE-2026-96762 — kvcache-ai mooncake RPC Path UnmountSegment authorization

A vulnerability was determined in kvcache-ai mooncake up to 0.3.12/0.3.13.post1. This affects the function UnmountSegment of the component RPC Path Handler. This manipulation of the argument client_id/segment_id causes authorization bypass. Remote exploitation of the attack is possible. The exploit has been publicly disclosed and may be utilized. The vendor was contacted early about this disclosure but did not respond in any way.

Published Sep 23, 2026 · Updated Oct 15, 2026 · Sources: NIST National Vulnerability Database, CVE Program (cve.org) e CISA ADP · CNA: VulDB

Low

Who exploits it and how urgent it is

A 0–100 score combining confirmed exploitation, ransomware and APT use, public exploits, EPSS and severity.

No exploitation signal in the sources consulted so far.

How the score was calculated

EPSS 0.3% (30-day exploitation probability)+3
Technical severity (high)+6

The score orders the patch queue; it does not replace your asset context (internet exposure, criticality, compensating controls).

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the sources call it.

Exploitation

Not confirmed

Not in CISA KEV — an absence of record, not proof it is unexploited.

EPSS FIRST

0.29%

ahead of 20% of scored CVEs · Oct 15, 2026

Affects

Kvcache-ai

Mooncake

CVSS base

7.3

High · 2 source(s)

CISA SSVC assessment CISA

Three decision points CISA publishes for the CVEs it assesses (SSVC 2.0.3). A stakeholder decision, not a severity score.

Exploitation

None

none · proof-of-concept · active

Automatable

can an attacker script the kill-chain steps

Technical impact

Partial

partial · total control of the vulnerable component

Remediation

Fixes and mitigations documented by the sources — linked to the original advisory.

No fix documented by the sources we poll. That does not mean none exists: check the vendor advisory.

First 24 hours

Ordered from the record’s own fields — exposure first, because you cannot patch what you have not found. A rule-generated starting point.

Identify exposed assets running the affected vendor/product/version combinations (Kvcache-ai Mooncake).
The attack is network-based and needs no privileges: restrict exposure (ACLs, VPN, WAF) until patched.
No fix documented in the sources: reduce exposure and monitor the vendor advisory.
Search available logs for exploit probes matching the vulnerability class (access control), errors and authentication anomalies.

Affected scope

Vendor, product and versions as the sources word them.

Vendor	Product	Versions	Status	Source
Kvcache-ai	Mooncake	version 0.3.0version 0.3.1version 0.3.2version 0.3.3version 0.3.4version 0.3.5version 0.3.6version 0.3.7 and 6 more version 0.3.8version 0.3.9version 0.3.10version 0.3.11version 0.3.12version 0.3.13.post1	Vulnerable	CVE Program (cve.org) e CISA ADP

Attack characteristics

The CVSS vector, decoded. It describes the attack, not your exposure to it.

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

Low

Availability

Low

Every base score collected

Sources score independently and may disagree; each row says who scored it and under which version.

Score	Version	Severity	Expl.	Impact	Scored by
6.9	CVSS 4.0	Medium	—	—	VulDB via CVE Program (cve.org) e CISA ADP
5.5	CVSS 4.0	Medium	—	—	cna@vuldb.com via NIST National Vulnerability Database
7.3	CVSS 3.1	High	3.9	3.4	cna@vuldb.com via NIST National Vulnerability Database
7.3	CVSS 3.1	High	—	—	VulDB via CVE Program (cve.org) e CISA ADP
7.3	CVSS 3.0	High	—	—	VulDB via CVE Program (cve.org) e CISA ADP
7.5	CVSS 2.0	High	10.0	6.4	cna@vuldb.com via NIST National Vulnerability Database
7.5	CVSS 2.0	High	—	—	VulDB via CVE Program (cve.org) e CISA ADP

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L (score shown at the top: cna@vuldb.com)

Weakness MITRE

Weakness class according to MITRE’s CWE catalog.

CWE-285 · Improper Authorization

Other CVEs with this weakness →

Detection

Read off the CVSS vector and the weakness class. Starting points, not tested rules.

Prioritize edge telemetry for the network-reachable component (proxy, WAF, IDS/IPS).
Audit administrative actions and access to resources outside each user’s normal pattern.

web/proxy/WAF logsnetwork IDS/IPSauthentication logsapplication logs

Timeline

What happened to this CVE, newest first.

2026
Affected products added · kvcache-ai/mooncake
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
SSVC assessment updated
Oct 15, 2026 · CVE Program (cve.org) e CISA ADP
Record published
Oct 15, 2026
CVSS changed · 7.3
Oct 15, 2026 · NIST National Vulnerability Database
Source status changed · → Deferred
Oct 15, 2026 · NIST National Vulnerability Database
Record created in this database
Oct 15, 2026 · NIST National Vulnerability Database
CVE published
Sep 23, 2026 · VulDB

Source activity

Repeated readings are counted rather than listed.

1× Official description updated · Oct 15, 2026 – Oct 15, 2026

References

5 on the record

gist.github.com/yyymk/76d099537af0e661dd01eacc82b9a7ea
exploit, NIST National Vulnerability Database
vuldb.com/submit/904600
third-party-advisory, NIST National Vulnerability Database
vuldb.com/vuln/409016/cti
signature, permissions-required, NIST National Vulnerability Database
vuldb.com/vuln/409016
vdb-entry, technical-description, NIST National Vulnerability Database
vuldb.com/cve/CVE-2026-96762
third-party-advisory, NIST National Vulnerability Database

Elsewhere on this site

Kvcache-ai
every CVE for this vendor

Access control
same class

CWE-285
other pages naming this weakness

Related CVEs (same products)

High CVE-2026-106040 Mooncake Store through 0.3.13.post1 Missing Authorization via EvictDiskReplica RPC 9d
Medium CVE-2026-106039 Mooncake Store through 0.3.13.post1 Missing Authorization in Replication Task RPC 9d
Medium CVE-2026-106041 Mooncake Store through 0.3.13.post1 Missing Authorization via NotifyOffloadSuccess RPC 9d
High CVE-2026-106038 Mooncake Store through 0.3.13.post1 Unauthenticated Object Deletion via Remove RPCs 9d
Critical CVE-2026-106037 Mooncake through 0.3.13.post1 Missing Authentication in Store REST Service 9d
High CVE-2026-104433 Mooncake before 0.3.12 Out-of-Bounds Read via P2P Handshake readString 13d

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

No fixed version, patch or mitigation documented.
No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
No exploit packet captures, log samples, or incident case IDs supplied.

Answered from this record

Text assembled only from the fields above — no additional claims.

What should defenders know first?

CVE-2026-96762 is "kvcache-ai mooncake RPC Path UnmountSegment authorization", rated High. It affects Mooncake (Kvcache-ai); versions are in the scope table. It is not in CISA KEV, which does not rule out exploitation. CVSS 7.3 describes technical severity. EPSS 0.29% estimates the probability of exploitation in 30 days; neither replaces your asset context. First verify whether exposed or business-critical assets run the affected versions, apply vendor fixes or mitigations, and preserve logs for review.

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