Medium [CVE-2025-9907] Event-driven-ansible: event stream test mode exposes sensitive headers in aap eda

A flaw was found in the Red Hat Ansible Automation Platform, Event-Driven Ansible (EDA) Event Stream API. This vulnerability allows exposure of sensitive client credentials and internal infrastructure headers via the test_headers field when an event stream is in test mode.

The possible outcome includes leakage of internal infrastructure details, accidental disclosure of user or system credentials, privilege escalation if high-value tokens are exposed, and persistent sensitive data exposure to all users with read access on the event stream.

This issue is classified as Moderate because the exposure of sensitive headers, including client Authorization tokens and internal infrastructure values such as X-Trusted-Proxy, can lead to credential leakage and privilege escalation only after user forced mistake and with specific configuration.

Exploitation does not require complex conditions—any user with read access to the event stream can retrieve the headers once a request has been posted in test mode. Exploitation depends on either a user mistakenly sending credentials to the event stream endpoint or internal headers being injected when the wrong path is used.

The persistence of captured headers further increases risk, as sensitive values remain accessible until explicitly overwritten or deleted. Red Hat severity: Moderate — CVSS 6.7 (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).