RCE in Khyrenz Parseusbs
CVE-2026-40030
parseusbs before 1.9 contains an OS command injection vulnerability where the volume listing path argument (-v flag) is passed unsanitized into an os.popen() shell command with ls, allowing arbitrary command injection via crafted volume path arguments containing shell metacharacters. An attacker can provide a crafted volume path via the -v flag that injects arbitrary commands during volume content enumeration.
Vulnerability class: Command Injection (OS Command Injection)
EPSS: 0.007 (52.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
Affected products
- Khyrenz Parseusbs — versions 99f05996494e7e41ea0c7e13145ba20eb793e46b, 1.9.0, 0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (issue-tracking, product, Issue Tracking)
- disclosure@vulncheck.com (Patch, patch)
- disclosure@vulncheck.com (vendor-advisory, Third Party Advisory)
- disclosure@vulncheck.com (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-40030?
- CVE-2026-40030 is a high-severity vulnerability in Khyrenz Parseusbs, classified under OS Command Injection. CVSS score: 7.8/10. Published 2026-04-08.
- How severe is CVE-2026-40030?
- High severity. CVSS v3 base score is 7.8 out of 10.