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.
{
"cwe_ids": [
"CWE-78"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/40xxx/CVE-2026-40030.json",
"unresolved_ranges": [
{
"extracted_events": [
{
"fixed": "1.9.0"
}
],
"source": "AFFECTED_FIELD"
},
{
"extracted_events": [
{
"fixed": "1.9"
}
],
"source": "DESCRIPTION"
}
],
"cna_assigner": "VulnCheck"
}