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CVE PROGRAM SOURCE RECORD7.5 High

CVE-2026-12383

Eda-server: externaleventstreamviewset trusts subject header without validation and leaks expected dn

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 8

Default version status: affected

  • 0:1.1.21-1.el8ap to < *unaffected

Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 9

Default version status: affected

  • 0:1.1.21-1.el9ap to < *unaffected

Red Hat Red Hat Ansible Automation Platform 2.6 for RHEL 9

Default version status: affected

  • 0:1.2.11-1.el9ap to < *unaffected

Red Hat Red Hat Ansible Automation Platform 2.7

Default version status: affected

  • 1785374869 to < *unaffected

References