CVE-2026-18141: Red Hat Ansible Automation Platform 2

High severity, CVSS 8.2. EPSS: 0.4% chance of exploitation in the next 30 days.

A flaw was found in aap-gateway, a component of Ansible Automation Platform's Event-Driven Ansible (EDA). An unauthenticated remote attacker can bypass mutual Transport Layer Security (mTLS) authentication for event streams. This is achieved by manipulating the event stream URL and forging the HTTP Subject header. The system also inadvertently discloses the expected certificate subject in error messages, which simplifies the attack. This vulnerability allows an attacker to inject arbitrary events into EDA, potentially triggering automated workflows.

Affected products

• Red Hat Red Hat Ansible Automation Platform 2
• Red Hat Red Hat Ansible Automation Platform 2.6: before 1785780020 (fixed in 1785780020)
• Red Hat Red Hat Ansible Automation Platform 2.6 For Rhel 9: before 0:1.2.11-1.el9ap (fixed in 0:1.2.11-1.el9ap)
• Red Hat Red Hat Ansible Automation Platform 2.7: before 1785435970 (fixed in 1785435970)

Published 2026-07-31. Last modified 2026-08-04.