CVE-2026-84716 — Automation-controller: automation-controller: instance install_bundle issues 10-year, non-revocable receptor mesh-ca…

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Red Hat / Red Hat Ansible Automation Platform 2.5 for RHEL 8	unaffected 0:4.6.33-1.el8ap before *
Red Hat / Red Hat Ansible Automation Platform 2.5 for RHEL 9	unaffected 0:4.6.33-1.el9ap before *
Red Hat / Red Hat Ansible Automation Platform 2.6 for RHEL 9	unaffected 0:4.7.17-1.el9ap before *
Red Hat / Red Hat Ansible Automation Platform 2.6	unaffected 1789673739 before *
Red Hat / Red Hat Ansible Automation Platform 2.7	unaffected 1789580684 before *

CWE

CWE-266

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.