CVE-2025-9908: Ansible Automation Platform Info Disclosure

CVE-2025-9908 Overview

A flaw was found in the Red Hat Ansible Automation Platform, Event-Driven Ansible (EDA) Event Streams. This vulnerability allows an authenticated user to gain access to sensitive internal infrastructure headers (such as X-Trusted-Proxy and X-Envoy-*) and event stream URLs via crafted requests and job templates. By exfiltrating these headers, an attacker could spoof trusted requests, escalate privileges, or perform malicious event injection.

Critical Impact

An authenticated attacker can extract sensitive internal headers to spoof trusted requests, escalate privileges, or inject malicious events into the automation platform.

Affected Products

• Red Hat Ansible Automation Platform
• Event-Driven Ansible (EDA)
• EDA Event Streams

Discovery Timeline

• 2026-02-27 - CVE CVE-2025-9908 published to NVD
• 2026-02-27 - Last updated in NVD database

Technical Details for CVE-2025-9908

Vulnerability Analysis

This vulnerability is classified as CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor) and affects the Event-Driven Ansible component within Red Hat Ansible Automation Platform. The flaw allows authenticated users to access internal infrastructure headers that should be restricted from user visibility.

The vulnerability enables access to sensitive proxy and service mesh headers including X-Trusted-Proxy and various X-Envoy-* headers used by the underlying infrastructure. These headers contain critical routing and trust relationship information that, when exposed, can be leveraged for multiple attack scenarios.

An authenticated attacker exploiting this vulnerability could use the extracted header information to craft requests that appear to originate from trusted internal sources. This enables privilege escalation by bypassing security controls that rely on header-based trust validation, as well as event injection attacks that could manipulate automation workflows.

Root Cause

The root cause lies in insufficient access control mechanisms within the Event-Driven Ansible Event Streams component. The application fails to properly sanitize or filter internal infrastructure headers when processing and responding to crafted requests and job templates. This allows authenticated users to enumerate and exfiltrate headers that should remain internal to the infrastructure layer.

Attack Vector

The attack requires local access with high privileges (as indicated by the CVSS vector). An authenticated attacker can craft malicious requests or job templates designed to expose internal headers and event stream URLs. The attack flow involves:

1. The attacker authenticates to the Ansible Automation Platform with valid credentials
2. Crafted requests or job templates are submitted through the Event-Driven Ansible interface
3. The EDA Event Streams component processes these requests without properly filtering internal headers
4. Sensitive headers like X-Trusted-Proxy and X-Envoy-* are exposed in responses
5. The attacker harvests these headers to construct spoofed requests for privilege escalation or event injection

Since no verified code examples are available, administrators should review the Red Hat CVE Analysis for detailed technical information about the exploitation mechanism.

Detection Methods for CVE-2025-9908

Indicators of Compromise

• Unusual access patterns to Event-Driven Ansible job templates from authenticated users
• Requests containing references to internal headers such as X-Trusted-Proxy or X-Envoy-*
• Abnormal event stream URL enumeration activity
• Suspicious job template modifications that may be designed to expose infrastructure headers

Detection Strategies

• Monitor EDA logs for requests that reference or attempt to extract internal proxy headers
• Implement alerting for unusual job template creation or modification patterns
• Audit user activities within the Ansible Automation Platform for reconnaissance behavior
• Review network traffic for requests containing crafted payloads targeting header exposure

Monitoring Recommendations

• Enable verbose logging on Event-Driven Ansible components to capture detailed request information
• Configure SIEM rules to detect patterns associated with header enumeration attempts
• Implement user behavior analytics to identify anomalous authenticated user activity
• Monitor for unauthorized event injection attempts in automation workflows

How to Mitigate CVE-2025-9908

Immediate Actions Required

• Apply the security patches provided in Red Hat Security Advisories immediately
• Review and audit all existing job templates for potentially malicious configurations
• Restrict access to the Event-Driven Ansible Event Streams to only necessary users
• Enable enhanced logging to detect any ongoing exploitation attempts

Patch Information

Red Hat has released multiple security advisories addressing this vulnerability. Administrators should apply the patches from the following advisories:

• Red Hat Security Advisory RHSA-2025:19201
• Red Hat Security Advisory RHSA-2025:19221
• Red Hat Security Advisory RHSA-2025:23069
• Red Hat Security Advisory RHSA-2025:23131

For additional details, refer to the Red Hat CVE Analysis and Red Hat Bug Report #2392835.

Workarounds

• Implement strict role-based access control to limit which users can create or modify job templates
• Deploy network segmentation to isolate the Ansible Automation Platform from sensitive infrastructure
• Configure reverse proxy or API gateway rules to strip or validate internal headers before processing
• Temporarily disable Event-Driven Ansible Event Streams if not business-critical until patches are applied

# Review current user access to EDA components
ansible-playbook audit_eda_access.yml

# Restrict job template creation permissions
# Update your RBAC configuration to limit template access
subscription-manager repos --enable=ansible-automation-platform-2.4-for-rhel-8-x86_64-rpms
yum update ansible-automation-platform