{"id":"CVE-2026-96763","state":"PUBLISHED","title":"kvcache-ai mooncake MountSegment Request Processing segment.cpp access control","description":"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.","publishedAt":"2026-09-24T00:00:16.519Z","updatedAt":"2026-09-29T02:41:22.511Z","severity":{"score":5.3,"label":"Medium","version":"4.0","vector":"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","source":"VulDB"},"assigner":"VulDB","products":["kvcache-ai mooncake"],"affected":[{"vendor":"kvcache-ai","product":"mooncake","versions":[{"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","status":"affected"},{"version":"0.3.5","status":"affected"},{"version":"0.3.6","status":"affected"},{"version":"0.3.7","status":"affected"},{"version":"0.3.8","status":"affected"},{"version":"0.3.9","status":"affected"},{"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","status":"affected"}],"cpes":["cpe:2.3:a:kvcache-ai:mooncake:*:*:*:*:*:*:*:*"],"modules":["MountSegment Request Processing"]}],"references":["https://vuldb.com/vuln/409018","https://vuldb.com/vuln/409018/cti","https://vuldb.com/cve/CVE-2026-96763","https://vuldb.com/submit/904605","https://gist.github.com/yyymk/fea24846dc31042cb472d7bd496a8438"],"weaknesses":["CWE-284","CWE-266"],"ingestedAt":"2026-10-29T20:13:43.249Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/96xxx/CVE-2026-96763.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-96763","state":"PUBLISHED","datePublished":"2026-09-24T00:00:16.519Z","dateUpdated":"2026-09-29T02:41:22.511Z","assignerShortName":"VulDB","assignerOrgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateReserved":"2026-09-23T16:01:21.340Z"},"containers":{"cna":{"title":"kvcache-ai mooncake MountSegment Request Processing segment.cpp access control","descriptions":[{"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."}],"affected":[{"vendor":"kvcache-ai","product":"mooncake","versions":[{"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","status":"affected"},{"version":"0.3.5","status":"affected"},{"version":"0.3.6","status":"affected"},{"version":"0.3.7","status":"affected"},{"version":"0.3.8","status":"affected"},{"version":"0.3.9","status":"affected"},{"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","status":"affected"}],"cpes":["cpe:2.3:a:kvcache-ai:mooncake:*:*:*:*:*:*:*:*"],"modules":["MountSegment Request Processing"]}],"references":[{"url":"https://vuldb.com/vuln/409018","name":"VDB-409018 | kvcache-ai mooncake MountSegment Request Processing segment.cpp access control","tags":["vdb-entry","technical-description"]},{"url":"https://vuldb.com/vuln/409018/cti","name":"VDB-409018 | CTI Indicators (IOB, IOC, TTP, IOA)","tags":["signature","permissions-required"]},{"url":"https://vuldb.com/cve/CVE-2026-96763","name":"CVE-2026-96763 | CVE Analysis and Report","tags":["third-party-advisory"]},{"url":"https://vuldb.com/submit/904605","name":"Submit #904605 | kvcache-ai mooncake mooncake-transfer-engine==0.3.11.post1 Access Control","tags":["third-party-advisory"]},{"url":"https://gist.github.com/yyymk/fea24846dc31042cb472d7bd496a8438","tags":["exploit"]}],"metrics":[{"cvssV4_0":{"version":"4.0","baseScore":5.3,"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","baseSeverity":"MEDIUM"}},{"cvssV3_1":{"version":"3.1","baseScore":5.4,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV3_0":{"version":"3.0","baseScore":5.4,"vectorString":"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","baseSeverity":"MEDIUM"}},{"cvssV2_0":{"version":"2.0","baseScore":6.4,"vectorString":"AV:N/AC:L/Au:N/C:N/I:P/A:P/E:POC/RL:ND/RC:UR"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-284","type":"CWE","lang":"en","description":"Improper Access Controls"}]},{"descriptions":[{"cweId":"CWE-266","type":"CWE","lang":"en","description":"Incorrect Privilege Assignment"}]}],"providerMetadata":{"shortName":"VulDB","orgId":"1af790b2-7ee1-4545-860a-a788eba489b5","dateUpdated":"2026-09-24T00:00:16.519Z"},"timeline":[{"time":"2026-09-23T00:00:00.000Z","lang":"en","value":"Advisory disclosed"},{"time":"2026-09-23T02:00:00.000Z","lang":"en","value":"VulDB entry created"},{"time":"2026-09-23T18:06:34.000Z","lang":"en","value":"VulDB entry last update"}],"credits":[{"lang":"en","value":"YYYMK (VulDB User)","type":"reporter"},{"lang":"en","value":"VulDB CNA Team","type":"coordinator"}],"x_generator":["VulDB PVTS v202609"]},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-09-29T02:41:13.416455Z","id":"CVE-2026-96763","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-09-29T02:41:22.511Z"}}]}}}