{"id":"CVE-2026-44449","aliases":["EUVD-2026-31980"],"status":"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 \"; !\u003ccmd\u003e; echo \" achieves arbitrary command execution on the Lumiverse server. This vulnerability is fixed in 0.9.7.","severity":{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00451,"percentile":0.39461,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-88"],"published":"2026-05-26T20:00:12Z","modified":"2026-07-24T11:10:00Z","products":[{"vendor":"prolix-oc","product":"lumiverse"}],"references":[{"url":"https://github.com/prolix-oc/Lumiverse/security/advisories/GHSA-4v38-9hqq-7j53","tags":["x_refsource_CONFIRM","exploit"]}],"sources":{"cve":[{"id":"CVE-2026-44449","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 \"; !\u003ccmd\u003e; echo \" achieves arbitrary command execution on the Lumiverse server. This vulnerability is fixed in 0.9.7.","status":"published","published":"2026-05-26T20:00:12.09Z","modified":"2026-05-27T13:22:34.992Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-88"],"updated_at":"2026-11-02T13:43:00.288193Z"}],"euvd":[{"id":"EUVD-2026-31980","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 \"; !\u003ccmd\u003e; echo \" achieves arbitrary command execution on the Lumiverse server. This vulnerability is fixed in 0.9.7.","status":"published","published":"2026-05-26T20:00:12Z","modified":"2026-05-27T13:22:34Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:21:04.78276Z"}],"nvd":[{"id":"CVE-2026-44449","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 \"; !\u003ccmd\u003e; echo \" achieves arbitrary command execution on the Lumiverse server. This vulnerability is fixed in 0.9.7.","status":"published","published":"2026-05-26T21:16:38.037Z","modified":"2026-07-24T11:10:00.17Z","cvss":[{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-88"],"updated_at":"2026-11-02T14:12:20.511562Z"}]}}