CVE-2025-66170CWE-863broken-access-control

CVE-2025-66170

Medium · published May 8, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
41.0
In the wild
Unconfirmed
What it is

The CloudStack Backup plugin has an improper authorization 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 has access to specific APIs can list backups from any account in the environment. This vulnerability does not allow them to see the contents of the backup.

Users are recommended to upgrade to version 4.22.0.1, which fixes the issue.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00486 · 41.0th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-05-08T17:16Z
Affected products (1)
ProductVersionsFixed in
apache/cloudstack≥ 4.21.0.0, < 4.22.0.14.22.0.1
References (2)
https://lists.apache.org/thread/n8mt5b7wkpysstb8w7rr9f02kc5cq2xm · [email protected]http://www.openwall.com/lists/oss-security/2026/05/09/1 · af854a3a-2127-422b-91ae-364da2661108
EPSS history
Timeline
  • 08 MAY 12:06Z
    Apache CloudStack: Any user can list backups that they should not have access to
    cvelistv5