A flaw was found in the automation-controller instance
install-bundle endpoint. When a System Administrator downloads
an execution/hop node's install bundle, the controller signs an
X.509 certificate with the receptor mesh certificate authority
in which the Common Name, DNS subject-alternative-name, and
receptor node-id are taken verbatim from the caller-chosen
instance hostname, with a hard-coded ten-year validity, a random
serial, and no issuance log or revocation list. Because the
hostname charset validator is case-insensitive while the
uniqueness validator is case-sensitive, an administrator can
register a case variant of an existing control node's hostname
and obtain a mesh-CA-signed certificate that TLS peers, which
match hostnames case-insensitively, accept as that control node.
In managed/hosted deployments — where the customer holds
controller superuser but the platform operator runs the mesh —
this yields a long-lived, non-revocable mesh peer credential and,
with an on-path position, TLS impersonation or interception of
control/hybrid mesh nodes. It does not grant direct remote code
execution, because receptor work submission is gated by a
separate signing key not included in the bundle.
Metrics
Affected Vendors & Products
References
History
Fri, 25 Sep 2026 05:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Thu, 24 Sep 2026 06:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/a:redhat:ansible_automation_platform:2.7::el9 | |
| References |
|
Thu, 24 Sep 2026 04:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:/a:redhat:ansible_automation_platform:2.5::el8 cpe:/a:redhat:ansible_automation_platform:2.5::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8 cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8 cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9 |
|
| References |
|
Thu, 24 Sep 2026 00:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| References |
| |
| Metrics |
threat_severity
|
threat_severity
|
Wed, 23 Sep 2026 22:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Redhat ansible Automation Platform Developer
Redhat ansible Automation Platform Inside |
|
| CPEs | cpe:/a:redhat:ansible_automation_platform:2.6::el10 cpe:/a:redhat:ansible_automation_platform:2.6::el9 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10 cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9 cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9 |
|
| Vendors & Products |
Redhat ansible Automation Platform Developer
Redhat ansible Automation Platform Inside |
|
| References |
|
Wed, 23 Sep 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A flaw was found in the automation-controller instance install-bundle endpoint. When a System Administrator downloads an execution/hop node's install bundle, the controller signs an X.509 certificate with the receptor mesh certificate authority in which the Common Name, DNS subject-alternative-name, and receptor node-id are taken verbatim from the caller-chosen instance hostname, with a hard-coded ten-year validity, a random serial, and no issuance log or revocation list. Because the hostname charset validator is case-insensitive while the uniqueness validator is case-sensitive, an administrator can register a case variant of an existing control node's hostname and obtain a mesh-CA-signed certificate that TLS peers, which match hostnames case-insensitively, accept as that control node. In managed/hosted deployments — where the customer holds controller superuser but the platform operator runs the mesh — this yields a long-lived, non-revocable mesh peer credential and, with an on-path position, TLS impersonation or interception of control/hybrid mesh nodes. It does not grant direct remote code execution, because receptor work submission is gated by a separate signing key not included in the bundle. | |
| Title | Automation-controller: automation-controller: instance install_bundle issues 10-year, non-revocable receptor mesh-ca certificates for caller-chosen (and case-variant impersonating) hostnames | |
| First Time appeared |
Redhat
Redhat ansible Automation Platform |
|
| Weaknesses | CWE-266 | |
| CPEs | cpe:/a:redhat:ansible_automation_platform:2 | |
| Vendors & Products |
Redhat
Redhat ansible Automation Platform |
|
| References |
| |
| Metrics |
cvssV3_1
|
Status: PUBLISHED
Assigner: redhat
Published: 2026-09-23T19:40:28.390Z
Updated: 2026-10-16T11:55:20.071Z
Reserved: 2026-09-02T01:03:53.834Z
Link: CVE-2026-84716
Updated: 2026-09-24T13:59:02.992Z
Status : Awaiting Analysis
Published: 2026-09-23T20:17:18.210
Modified: 2026-09-24T16:17:12.540
Link: CVE-2026-84716