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Message-ID: <1632823e-effb-4c86-adc7-8734ffc2ea07@apache.org>
Date: Fri, 8 May 2026 14:12:59 +0200
From: "Piotr P. Karwasz" <pkarwasz@...che.org>
To: oss-security@...ts.openwall.com
Subject: CVE-2025-66172: Apache CloudStack: Any user can attach a volume in
their VMs from backups they should not have access to
Severity: important
Affected versions:
- Apache CloudStack 4.21.0.0 through 4.22.0.0
Description:
The CloudStack Backup plugin has an improper access logic in versions
4.21.0.0 and 4.22.0.0. Anyone with authenticated user-account access in
CloudStack 4.21.0.0+ environments, where this plugin is enabled and have
access to specific APIs can restore a volume from any other user's
backups and attach the volume to their own VMs.
Backup plugin users using CloudStack 4.21.0.0+ are recommended to
upgrade to CloudStack version 4.22.0.1, which fixes this issue.
Credit:
Gabriel Pordeus (reporter)
References:
https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm
https://cloudstack.apache.org/
https://www.cve.org/CVERecord?id=CVE-2025-66172
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