CVE WatchAug 21, 2026

CVE-2026-47359

Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') vulnerability in Apache CloudStack's NAS backup p

CVSS

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No CVSS

EPSS

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KEV

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Exploit Today

0-100

Published: Aug 21, 2026 · Last modified: Aug 21, 2026 · CWE-78

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

lists.apache.orghttps://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc

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