What’s Vulnerable › Vulnerabilities

CVE-2026-44449: Lumiverse: SMB `exists()` basename injection via smbclient `!cmd` escape

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-05-26 · updated 2026-07-24
• Weakness: CWE-88

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.

Affected products

• prolix-oc Lumiverse: before 0.9.7

References

• https://github.com/prolix-oc/Lumiverse/security/advisories/GHSA-4v38-9hqq-7j53
• https://github.com/prolix-oc/Lumiverse/security/advisories/GHSA-4v38-9hqq-7j53

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