CVE Catalog

CVE-2026-12383

HighCVSS 7.5
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.16%

5th percentile - higher than 5% of all known CVEs

Summary

The Event-Driven Ansible (EDA) server has a vulnerability in ExternalEventStreamViewSet with permissive access controls and reliance on the Subject HTTP header for mTLS authentication without proxy verification. Attackers can inject events into mTLS-protected streams.

Risk Assessment

An attacker can trigger unauthorized Ansible automation actions, potentially disrupting IT infrastructure.

Recommendation

Update the EDA server to a version with fixed access controls and Subject header verification.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS