CVE-2026-61397

High

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack's OAuth2 authentication plugin and Google OAuth integration. This issue affects Apache CloudStack: from 4.19.0.0 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, which fixes the issue.

SeverityHigh

CVSS7.5

Exploit probability—

Product

Apache Cloudstack

PublishedAug 21, 2026

First seenAug 21, 2026

Weakness typeCWE-200Sensitive information exposure

How to fix

Update

apache cloudstack4.20.3.1, 4.22.1.1 or later

Vendor advisories

lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc

Affected products

Product	Affected versions	Fixed in
apache cloudstack	4.19.0.0 ≤ v < 4.20.3.1, 4.21.0.0 ≤ v < 4.22.1.1	4.20.3.1, 4.22.1.1

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