CVE-2026-12383 | A flaw was found in the Event-Driven Ansible (EDA) server. T… | CVSS 7.5 HIGH

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.

Metadata

CVE ID: CVE-2026-12383
State: PUBLISHED
Assigner: redhat
Reserved: 2026-06-16 10:07 UTC
Published: 2026-07-27 19:12 UTC
Last updated: 2026-07-27 19:32 UTC
Primary CWE: CWE-345
Insufficient Verification of Data Authenticity
Vendor / Product: Red Hat / Red Hat Ansible Automation Platform 2
Sources: cve.org · NVD

Severity & Metrics

7.5 HIGH CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: partial

Affected products (2)

Vendor	Product	Platform	Versions
Red Hat	Red Hat Ansible Automation Platform 2	—	—
Red Hat	Red Hat Ansible Automation Platform 2	—	—

Weakness (CWE)

CWE	Source	Description
CWE-345	cna	Insufficient Verification of Data Authenticity

CVSS scores (1)

Score	Severity	Version	Source	Vector
7.5	HIGH	3.1	cna	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

References (2)