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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.012 (66.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 67th percentile — 66.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.007 · newest: 0.012 · change: +0.004
Affected products
- Khyrenz Parseusbs — versions 99f05996494e7e41ea0c7e13145ba20eb793e46b, 1.9.0, 0
Weakness classification (CWE)
References
- github.com/khyrenz/parseusbs/pull/10 (issue-tracking, product, Issue Tracking)
- github.com/khyrenz/parseusbs/commit/99f05996494e7e41ea0c7e13145ba20eb793e46b (Patch, patch)
- mobasi.ai/sentinel (vendor-advisory, Third Party Advisory)
- www.vulncheck.com/advisories/parseusbs-command-injection-via-volume-path-argume… (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.