Sensitive Information Exposure in Apache CloudStack OAuth2 Authentication Plugin
CVE-2026-61397

7.5HIGH

Key Information:

Vendor

Apache
Status
Apache Cloudstack
Vendor
CVE Published:
21 August 2026

What is CVE-2026-61397?

A vulnerability has been identified in Apache CloudStack's OAuth2 authentication plugin, specifically impacting Google OAuth integration. This flaw could potentially allow unauthorized actors to access sensitive user information, posing significant security risks for affected systems. Users are strongly encouraged to upgrade to the latest secure versions, 4.20.3.1 or 4.22.1.1, to mitigate this vulnerability and enhance the security of their environments.

Affected Version(s)

Apache CloudStack 4.19.0.0 <= 4.20.3.0

Apache CloudStack 4.21.0.0 <= 4.22.1.0

References

https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3f...
vendor-advisory

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Katriel Moses <katriel.moses@gmail.com>
"Network and Cloud Laboratory (NaCl) KMITL" <nacl@kmitl.ac.th>
Paratpanu Pechsaman <66010542@kmitl.ac.th>
Nutthawat Charoensiriphong <68010321@kmitl.ac.th>
Panabordee Panitchakit <68010697@kmitl.ac.th>
.