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TI-2026-63858 Aliases CVE-2026-96763GHSA-c29f-6gh6-wwv9

kvcache-ai mooncake MountSegment Request Processing segment.cpp access control

Priority MEDIUM 57CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Passive
Attack complexity
Low
Attack requirements
None
Impact type
Privilege escalation, Security bypass
Confidentiality · integrity · availability
None · Low · Low
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-266 and CWE-284.

Summary

A security flaw has been discovered in kvcache-ai mooncake up to 0.3.12/0.3.13.post1/0.3.14-rc1. This issue affects the function ScopedSegmentAccess::MountSegment of the file segment.cpp of the component MountSegment Request Processing. Performing a manipulation results in improper access controls. The attack is possible to be carried out remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00247 16th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
kvcache-aimooncake0.3.0; 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; 0.3.14-rc1—No fix listedCNA
  • mooncake Vendorkvcache-ai Affected 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; 0.3.14-rc1 Fixed in — No fix listed CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:kvcache-ai:mooncake:*:*:*:*:*:*:*:*——kvcache-ai
  • cpe:2.3:a:kvcache-ai:mooncake:*:*:*:*:*:*:*:* Versions — — ·kvcache-ai

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-96763
  2. 2026-10-03 Alias added: GHSA-c29f-6gh6-wwv9

References

Exploit 1

  • TI-2026-68428 Missing authentication in Mooncake Store REST service CVSS 4.0CRITICAL 9.3
  • TI-2026-65760 Mooncake transfer engine before 0.3.13 Unauthenticated Arbitrary Memory Read/Write via TCP Transport CVSS 4.0CRITICAL 9.3
  • TI-2026-21201 KTransformers Unsafe Deserialization RCE via balance_serve CVSS 4.0CRITICAL 9.3
  • TI-2026-65761 Mooncake through 0.3.13.post1 Missing Authentication in HTTP Metadata Server CVSS 4.0HIGH 8.8
  • TI-2026-68429 Mooncake Store lets unauthenticated attackers delete any object CVSS 4.0HIGH 8.8
  • TI-2026-67384 Mooncake before 0.3.12 Out-of-Bounds Read via P2P Handshake readString CVSS 4.0HIGH 8.7
See all 14 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences