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Vulnerability details

CVE-2026-47359

Apache Software Foundation Apache CloudStack

Apache CloudStack: OS Command Injection due to unsanitized mount command

CVSS 3.1
8.8High

Official description

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Apache CloudStack's NAS backup provider plugin. The addBackupRepository API (available since 4.20.0.0) and updateBackupRepository API (introduced in 4.22.0.0) accept unsanitized command options for the backup repository. A malicious operator account can exploit this to inject arbitrary commands that execute on the KVM hypervisor host when any account subsequently performs a backup restore. This issue affects Apache CloudStack: from 4.20.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0. Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

CVSS scores

ScoreVersionSourceVector
8.8High 3.1 CISA ADP / Vulnrichment (CISA-ADP) CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

VendorProductVersionsSource
Apache Software Foundation Apache CloudStack 4.20.0.0 ≤ v ≤ 4.20.3.0 CVEProject cvelistV5 (CNA)
Apache Software Foundation Apache CloudStack 4.21.0.0 ≤ v ≤ 4.22.1.0 CVEProject cvelistV5 (CNA)

References and advisories

1
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Details

Published
2026-08-21
Last updated
2026-08-26
State
Published
Assigner (CNA)
apache

Exploit prediction (EPSS)

2.03%
Probability of exploitation in 30 days
81.2%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
None
Technical impact
Total

Weaknesses (CWE)

  • CWE-78
    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')