Medium severity · published Aug 21, 2026
CVE-2026-65613
Apache CloudStack: Webhook Deliveries Incorrect Access
4.3
CVSS
0.5%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 39% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AC
Apache CloudStack · Apache Software Foundation
4.20.0.0 through 4.20.3.0; 4.21.0.0 through 4.22.1.0 · source: vendor
CL
Cloudstack · Apache
4.20.0.0 before 4.20.3.1; 4.21.0.0 before 4.22.1.1 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-65613
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-65613
Mailing List
https://lists.apache.org/thread/g6cwddtjrwbh1d56wjz4cfp3fzfm4kbc
More from Apache CloudStack
9.9
CVE-2024-50386
Apache CloudStack: Directly downloaded templates can be used to abuse KVM-based infrastructure
9.8
CVE-2024-38346
Apache CloudStack: Unauthenticated cluster service port leads to remote execution
9.8
CVE-2024-39864
Apache CloudStack: Integration API service uses dynamic port when disabled
9.8
CVE-2024-29006
Apache CloudStack: x-forwarded-for HTTP header parsed by default
9.1
CVE-2026-59085
Apache CloudStack: Server-Side Request Forgery (SSRF) vulnerability in webhook module