Description
A flaw was found in the AAP Gateway Envoy proxy configuration. The non-mTLS route to EDA event streams does not remove the Subject HTTP header from client requests, despite the source code defining requestHeadersToRemove for this header. An unauthenticated remote attacker can inject a spoofed Subject header matching a legitimate client certificate DN to bypass mTLS authentication and inject arbitrary events into protected EDA event streams.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 8 | — | — |
| Red Hat | Red Hat Ansible Automation Platform 2.5 for RHEL 9 | — | — |
| Red Hat | Red Hat Ansible Automation Platform 2.6 for RHEL 9 | — | — |
| Red Hat | Red Hat Ansible Automation Platform 2.6 | — | — |
| Red Hat | Red Hat Ansible Automation Platform 2.7 | — | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Red Hat Ansible Automation Platform Inside 2 | ansible-core | 1:2.16.19-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform Inside 2 | receptor +1 | 1.6.4-2.el9ap | RHSA-2026:42078, RHSA-2026:13508 |
| Red Hat Ansible Automation Platform Developer 2 | ansible-core | 1:2.16.19-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform Developer 2 | automation-controller +1 | 4.6.30-2.el8ap | RHSA-2026:42078, RHSA-2026:13508 |
| Red Hat Ansible Automation Platform Developer 2 | python3.12-urllib3 | 2.7.0-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform Developer 2 | receptor +1 | 1.6.4-2.el9ap | RHSA-2026:42078, RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | ansible-core +1 | 1:2.16.19-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform 2 | automation-controller +4 | 4.6.30-2.el8ap | RHSA-2026:42078, RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | automation-eda-controller +4 | 1.1.20-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform 2 | automation-gateway +2 | 2.5.20260715-1.el8ap | RHSA-2026:42078, RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | automation-gateway-proxy-server | 2.6.14-2.el9 | RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | automation-hub +1 | 4.10.16-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform 2 | automation-platform-ui | 2.6.8-1.el9ap | RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | python3.12-django-ansible-base +11 | 2.6.20260422-1.el9ap | RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | python3.12-gitpython | 3.1.50-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform 2 | python3.12-jwcrypto | 1.5.7-1.el9ap | RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | python3.12-markdown | 3.10.2-1.el9ap | RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | python3.12-pulp-ansible | 1:0.25.6-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform 2 | python3.12-pulp-container | 2.19.12-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform 2 | python3.12-pulpcore | 3.49.63-2.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform 2 | python3.12-pyOpenSSL | 26.0.0-1.el9ap | RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | python3.12-pyasn1 | 0.6.3-1.el9ap | RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | python3.12-pyjwt +1 | 2.12.1-1.el9ap | RHSA-2026:42078, RHSA-2026:13508 |
| Red Hat Ansible Automation Platform 2 | python3.12-pysequoia | 0.1.34-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform 2 | python3.12-urllib3 | 2.7.0-1.el8ap | RHSA-2026:42078 |
| Red Hat Ansible Automation Platform 2 | receptor +1 | 1.6.4-2.el9ap | RHSA-2026:42078, RHSA-2026:13508 |
Advisories 2
- RHSA-2026:42078 Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.5 Product Security and Bug Fix Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
- RHSA-2026:13508 Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update Red Hat Security Advisories (RHSA) · Oct 20, 2026
References
- RHSA-2026:13508 vendor-advisory
- RHSA-2026:13545 vendor-advisory
- RHSA-2026:42078 vendor-advisory
- RHSA-2026:42142 vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-12382 vdb-entry
- RHBZ#2489126 issue-tracking