CVE-2026-96763 (GCVE-0-2026-96763)

Vulnerability from cvelistv5 – Published: 2026-09-24 00:00 – Updated: 2026-09-24 00:00
VLAI
Title
kvcache-ai mooncake MountSegment Request Processing segment.cpp access control
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.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
5.4 (Medium)
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
CWE
  • CWE-284 - Improper Access Controls
  • CWE-266 - Incorrect Privilege Assignment
Assigner
References
URL Tags
https://vuldb.com/vuln/409018 vdb-entrytechnical-description
https://vuldb.com/vuln/409018/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-96763 third-party-advisory
https://vuldb.com/submit/904605 third-party-advisory
https://gist.github.com/yyymk/fea24846dc31042cb47… exploit
Impacted products
Vendor Product Version CPE status
kvcache-ai mooncake Affected: 0.3.0
Affected: 0.3.1
Affected: 0.3.2
Affected: 0.3.3
Affected: 0.3.4
Affected: 0.3.5
Affected: 0.3.6
Affected: 0.3.7
Affected: 0.3.8
Affected: 0.3.9
Affected: 0.3.10
Affected: 0.3.11
Affected: 0.3.12
Affected: 0.3.13.post1
Affected: 0.3.14-rc1
    cpe:2.3:a:kvcache-ai:mooncake:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
YYYMK (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:kvcache-ai:mooncake:*:*:*:*:*:*:*:*"
          ],
          "modules": [
            "MountSegment Request Processing"
          ],
          "product": "mooncake",
          "vendor": "kvcache-ai",
          "versions": [
            {
              "status": "affected",
              "version": "0.3.0"
            },
            {
              "status": "affected",
              "version": "0.3.1"
            },
            {
              "status": "affected",
              "version": "0.3.2"
            },
            {
              "status": "affected",
              "version": "0.3.3"
            },
            {
              "status": "affected",
              "version": "0.3.4"
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            {
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              "version": "0.3.5"
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            {
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              "version": "0.3.6"
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              "version": "0.3.7"
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              "version": "0.3.10"
            },
            {
              "status": "affected",
              "version": "0.3.11"
            },
            {
              "status": "affected",
              "version": "0.3.12"
            },
            {
              "status": "affected",
              "version": "0.3.13.post1"
            },
            {
              "status": "affected",
              "version": "0.3.14-rc1"
            }
          ]
        }
      ],
      "credits": [
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          "type": "reporter",
          "value": "YYYMK (VulDB User)"
        },
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          "type": "coordinator",
          "value": "VulDB CNA Team"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
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            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P",
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        "orgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
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        },
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          "tags": [
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          ],
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        },
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          "tags": [
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          "url": "https://vuldb.com/cve/CVE-2026-96763"
        },
        {
          "name": "Submit #904605 | kvcache-ai mooncake mooncake-transfer-engine==0.3.11.post1 Access Control",
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          "time": "2026-09-23T02:00:00.000Z",
          "value": "VulDB entry created"
        },
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          "lang": "en",
          "time": "2026-09-23T18:06:34.000Z",
          "value": "VulDB entry last update"
        }
      ],
      "title": "kvcache-ai mooncake MountSegment Request Processing segment.cpp access control",
      "x_generator": [
        "VulDB PVTS v202609"
      ]
    }
  },
  "cveMetadata": {
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    "assignerShortName": "VulDB",
    "cveId": "CVE-2026-96763",
    "datePublished": "2026-09-24T00:00:16.519Z",
    "dateReserved": "2026-09-23T16:01:21.340Z",
    "dateUpdated": "2026-09-24T00:00:16.519Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
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    "nvd": {
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                ],
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                ],
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          }
        ],
        "id": "CVE-2026-96763",
        "lastModified": "2026-09-24T14:40:36.103",
        "metrics": {
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                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
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                "providerUrgency": "NOT_DEFINED",
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                "subConfidentialityImpact": "NONE",
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                "userInteraction": "PASSIVE",
                "valueDensity": "NOT_DEFINED",
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  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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