{"id":"CVE-2026-44449","state":"PUBLISHED","title":"Lumiverse: SMB `exists()` basename injection via smbclient `!cmd` escape","description":"Lumiverse is a full-featured AI chat application. Prior to 0.9.7, when the primary toSmbPath(fullPath) call throws, the method falls back to a dirname/basename split and only validates the directory prefix. The basename is concatenated directly into the smbclient -c script without validation. smbclient interprets ; as a subcommand separator and !cmd as a local-shell escape that runs cmd on the host. A path whose directory component is clean but whose basename contains \"; !<cmd>; echo \" achieves arbitrary command execution on the Lumiverse server. This vulnerability is fixed in 0.9.7.","publishedAt":"2026-05-26T20:00:12.090Z","updatedAt":"2026-05-27T13:22:34.992Z","severity":{"score":9.1,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","source":"GitHub_M"},"assigner":"GitHub_M","products":["prolix-oc Lumiverse"],"affected":[{"vendor":"prolix-oc","product":"Lumiverse","versions":[{"version":"< 0.9.7","status":"affected"}]}],"references":["https://github.com/prolix-oc/Lumiverse/security/advisories/GHSA-4v38-9hqq-7j53"],"weaknesses":["CWE-88"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/44xxx/CVE-2026-44449.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44449","state":"PUBLISHED","datePublished":"2026-05-26T20:00:12.090Z","dateUpdated":"2026-05-27T13:22:34.992Z","assignerShortName":"GitHub_M","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateReserved":"2026-05-06T15:49:25.192Z"},"containers":{"cna":{"title":"Lumiverse: SMB `exists()` basename injection via smbclient `!cmd` escape","descriptions":[{"lang":"en","value":"Lumiverse is a full-featured AI chat application. Prior to 0.9.7, when the primary toSmbPath(fullPath) call throws, the method falls back to a dirname/basename split and only validates the directory prefix. The basename is concatenated directly into the smbclient -c script without validation. smbclient interprets ; as a subcommand separator and !cmd as a local-shell escape that runs cmd on the host. A path whose directory component is clean but whose basename contains \"; !<cmd>; echo \" achieves arbitrary command execution on the Lumiverse server. This vulnerability is fixed in 0.9.7."}],"affected":[{"vendor":"prolix-oc","product":"Lumiverse","versions":[{"version":"< 0.9.7","status":"affected"}]}],"references":[{"url":"https://github.com/prolix-oc/Lumiverse/security/advisories/GHSA-4v38-9hqq-7j53","name":"https://github.com/prolix-oc/Lumiverse/security/advisories/GHSA-4v38-9hqq-7j53","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"HIGH","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-88","lang":"en","description":"CWE-88: Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')","type":"CWE"}]}],"providerMetadata":{"shortName":"GitHub_M","orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","dateUpdated":"2026-05-26T20:00:12.090Z"},"source":{"advisory":"GHSA-4v38-9hqq-7j53","discovery":"UNKNOWN"}},"adp":[{"title":"CISA ADP Vulnrichment","references":[{"url":"https://github.com/prolix-oc/Lumiverse/security/advisories/GHSA-4v38-9hqq-7j53","tags":["exploit"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-27T13:22:29.674327Z","id":"CVE-2026-44449","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-05-27T13:22:34.992Z"}}]}}}