EUVD-2026-63834
GHSA-xcmw-2mxf-7592
Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Network-accessible management API requires low-privilege authentication; information disclosure only, with no integrity or availability impact confirmed.
Primary rating from Vendor (apache).
CVSS VectorVendor: apache
Lifecycle Timeline
2DescriptionCVE.org
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.
AnalysisAI
Sensitive information exposure in Apache CloudStack's Webhook module allows unauthorized actors to view data they should not have access to during webhook delivery listing and deletion operations. Affected deployments span versions 4.20.0.0 through 4.20.3.0 and 4.21.0.0 through 4.22.1.0, covering two active release trains. …
Unlock full vulnerability intelligence
- Risk assessment & exploitation conditions
- Attack chain visualization
- Remediation with exact patch versions
- Threat intelligence from 22 sources
- Personal watchlist & email alerts
Free forever · No credit card required
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid authenticated session on an affected Apache CloudStack instance (4.20.0.0-4.20.3.0 or 4.21.0.0-4.22.1.0) with access to the Webhook module's delivery listing or deletion endpoints. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | No CVSS vector was provided by the reporter, making score-based risk comparison impossible; metrics below are independently assessed. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: upgrade to Apache CloudStack 4.20.3.1 (for users on the 4.20.x train) or 4.22.1.1 (for users on the 4.21.x/4.22.x train), or any later release. … Detailed patch versions, workarounds, and compensating controls in full report. |
Threat intelligence, references, and detailed analysis are available after sign-in.
More in Apache Cloudstack
View allCross-tenant manipulation in Apache CloudStack's Kubernetes Service (CKS) plugin allows a tenant to add and remove nodes
Two-factor authentication bypass in Apache CloudStack allows an authenticated low-privileged user to exploit an improper
Cross-tenant root command execution in Apache CloudStack (4.14.0.0-4.20.3.0 and 4.21.0.0-4.22.1.0) allows an authenticat
SAML authentication bypass in Apache CloudStack 4.20.3.0 and 4.22.1.0 permits a network-positioned attacker to forge SAM
Authenticated CloudStack users can hijack volumes from other tenants' backups via the Backup plugin in versions 4.21.0.0
Sensitive OAuth configuration data is exposed to unauthenticated remote actors in Apache CloudStack's OAuth authenticati
Sensitive information exposure in Apache CloudStack's OAuth2 authentication plugin and Google OAuth integration allows u
Missing authorization controls across multiple Userdata-related APIs in Apache CloudStack expose cross-tenant data to an
Broken object-level authorization in Apache CloudStack exposes project role management APIs to Domain Admins operating o
Server-Side Request Forgery in Apache CloudStack's webhook module lets attackers coerce the management server into issui
Resource exhaustion in Apache CloudStack's scoped global configuration subsystem-spanning versions 4.7.0 through 4.20.3.
Improper access control in the CloudStack Backup plugin allows authenticated users in CloudStack 4.21.0.0 through 4.22.0
Same weakness CWE-200 – Information Exposure
View allSame technique Information Disclosure
View allShare
External POC / Exploit Code
Leaving vuln.today