Apache Cloudstack
CVE-2026-65613
Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache CloudStack's Webhook module while listing and deleting deliveries. This issue affects Apache CloudStack: from 4.20.0.0 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 or later, which fixes the issue.
What this means for your business
- It affects Apache Cloudstack. It matters if your company, or a supplier that handles your data, runs it.
- An attacker can use it remotely, over a network, with an ordinary user login, and without anyone at your company clicking anything.
- FIRST's prediction model gives it a 0.3% chance of attack attempts being seen in the next 30 days, ranking above 17% of all known flaws.
What to do
- 1Check whether your company or your suppliers run Apache Cloudstack, and which version. The affected versions are listed further down this page.
- 2If you do, apply the vendor's fix. A patch or vendor advisory has been published.
Fastnexa security experts
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Scoring
- CVSS
- 4.3 (v3.1)
- Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N- Weakness
- CWE-200
- Assigned by
- security@apache.org
Dates
- Published
- 2026-08-21
- Last modified
- 2026-08-27
- Sources
- NVD
Affected products
- Apache Cloudstack4.20.0.0 - 4.20.3.1, 4.21.0.0 - 4.22.1.1
As listed in the NVD configuration data. Not a statement about your estate.