CVE-2026-12383
Severity CVSS v4.0:
Pending analysis
Type:
CWE-345
Insufficient Verification of Data Authenticity
Publication date:
27/07/2026
Last modified:
04/08/2026
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.
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH