CVE-2026-61397

Analyzed Analyzed - Analysis Complete

Exposure of Sensitive Information in Apache CloudStack OAuth2 Plugin

Publication date: 2026-08-21

Last updated on: 2026-08-27

Assigner: Apache Software Foundation

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.

CVSS Scores

EPSS Scores

Probability:
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Meta Information

Published

2026-08-21

Last Modified

2026-08-27

Generated

2026-09-10

AI Q&A

2026-08-21

EPSS Evaluated

2026-09-09

NVD

CVE-2026-61397

EUVD

EUVD-2026-63840

Affected Vendors & Products

Vendor	Product	Version / Range
apache	cloudstack	From 4.21.0.0 (inc) to 4.22.1.1 (exc)
apache	cloudstack	From 4.19.0.0 (inc) to 4.20.3.1 (exc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-200	The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

Executive Summary

This vulnerability involves the exposure of sensitive information to unauthorized actors in Apache CloudStack's OAuth2 authentication plugin and Google OAuth integration. It affects specific versions of Apache CloudStack between 4.19.0.0 and 4.20.3.0, and between 4.21.0.0 and 4.22.1.0.

Detection Guidance

This vulnerability involves exposure of sensitive information in Apache CloudStack's OAuth2 authentication plugin and Google OAuth integration. To detect it, check for unauthorized access attempts in logs, verify OAuth token handling, and inspect network traffic for unencrypted sensitive data transmission.

Impact Analysis

An unauthorized actor could gain access to sensitive information due to this flaw. This may lead to data breaches, unauthorized access to user accounts, or other security incidents depending on the exposed data.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with GDPR, HIPAA, or other standards. The vulnerability involves exposure of sensitive information due to improper OAuth2 authentication handling in Apache CloudStack. Without explicit details on data types compromised or regulatory scope, compliance implications cannot be determined from this context.

Mitigation Strategies

Upgrade Apache CloudStack to version 4.20.3.1 or 4.22.1.1 to fix the OAuth2 authentication plugin and Google OAuth integration vulnerability.

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