A flaw was found in the Event-Driven Ansible (EDA) server. The ExternalEventStreamViewSet uses permissive access controls (permission_classes=[AllowAny], authentication_classes=[]) and relies solely on the Subject HTTP header value for mTLS authentication without verifying that the header originated from a trusted proxy. Additionally, the expected certificate Distinguished Name is leaked in the 403 error response body. An attacker who can reach the EDA API endpoint with a spoofed Subject header can inject arbitrary events into mTLS-protected event streams, triggering downstream automation actions.
Metrics
Affected Vendors & Products
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History
Tue, 28 Jul 2026 00:15:00 +0000
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threat_severity
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threat_severity
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Mon, 27 Jul 2026 20:30:00 +0000
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| Description | A flaw was found in the Event-Driven Ansible (EDA) server. The ExternalEventStreamViewSet uses permissive access controls (permission_classes=[AllowAny], authentication_classes=[]) and relies solely on the Subject HTTP header value for mTLS authentication without verifying that the header originated from a trusted proxy. Additionally, the expected certificate Distinguished Name is leaked in the 403 error response body. An attacker who can reach the EDA API endpoint with a spoofed Subject header can inject arbitrary events into mTLS-protected event streams, triggering downstream automation actions. | |
| Title | Eda-server: externaleventstreamviewset trusts subject header without validation and leaks expected dn | |
| First Time appeared |
Redhat
Redhat ansible Automation Platform |
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| Weaknesses | CWE-345 | |
| CPEs | cpe:/a:redhat:ansible_automation_platform:2 | |
| Vendors & Products |
Redhat
Redhat ansible Automation Platform |
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-07-27T19:32:02.421Z
Reserved: 2026-06-16T10:07:26.251Z
Link: CVE-2026-12383
Updated: 2026-07-27T19:31:55.988Z
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OpenCVE Enrichment
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