Server-Side Request Forgery in Apache CloudStack Webhook Module
CVE-2026-59085

Currently unrated

Key Information:

Vendor

Apache
Status
Apache Cloudstack
Vendor
CVE Published:
21 August 2026

What is CVE-2026-59085?

A Server-Side Request Forgery (SSRF) vulnerability exists in the webhook module of Apache CloudStack. This flaw allows attackers to send malicious requests through the server, which can lead to unauthorized access and potential data exposure. The vulnerability impacts versions of Apache CloudStack from 4.20.0.0 to 4.20.3.0 and from 4.21.0.0 to 4.22.1.0. To mitigate the risk, users are advised to upgrade to version 4.20.3.1 or 4.22.1.1 or later. Keeping your software up to date is crucial for maintaining a secure environment.

Affected Version(s)

Apache CloudStack 4.20.0.0 <= 4.20.3.0

Apache CloudStack 4.21.0.0 <= 4.22.1.0

References

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Jonathan Leitschuh <jonathan.leitschuh@gmail.com>
Łukasz Bawolski <Lukasz.Bawolski@exea.pl>
George Chen (GitHub: geo-chen)
.