CVE-2026-59654

Apache CloudStack: DoS caused by database connections leak

Assigner: apache
Reserved: 06.07.2026 Published: 21.08.2026 Updated: 21.08.2026

Missing Release of Resource after Effective Lifetime vulnerability in Apache CloudStack's scoped global configuration functionality. It affects different modules and plugins of the CloudStack management server, including Quota, Host-HA, etc., and may lead to eventual denial of service (DoS) scenario for the management server.

This issue affects Apache CloudStack: from 4.7.0 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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
CVSS Score: 6.8

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	None
Attack Complexity	Low	Integrity	None	Integrity	None
Attack Requirements	Present	Availability	High	Availability	High
Privileges Required	Low
User Interaction	Active

CVSS 4.0

Product Status

Vendor	Apache Software Foundation
Product	Apache CloudStack
Versions	Default: unaffected affected from 4.7.0 to 4.20.3.0 (incl.) affected from 4.21.0.0 to 4.22.1.0 (incl.)

Vendor

Apache Software Foundation

Product

Apache CloudStack

Versions

Default: unaffected

affected from 4.7.0 to 4.20.3.0 (incl.)
affected from 4.21.0.0 to 4.22.1.0 (incl.)

Credits

Henrique Sato <henriquesato2003@gmail.com> reporter

References

Problem Types