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CVE-2026-84716— Automation-controller: automation-controller: instance install_bundle issues 10-year, non-revocable receptor mesh-ca certificates for caller-chosen (and case-variant impersonating) hostnames

Quick assessment

Affected
Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 8
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 automation-controller 实例的 端点中发现了一个漏洞。当系统管理员下载执行节点或跳步节点的安装包时，控制器会使用受管网格（receptor mesh）的证书颁发机构对 X.509 证书进行签名。该证书中的通用名称（Common Name）、DNS 主题备用名称（DNS subject-alternative-name）以及 receptor 节点 ID 均直接从调用方选择的实例主机名中按字面获取，证书有效期硬编码为十年，序列号为随机生成，且没有颁发日志或吊销列表。 由于主机名字符集验证器是不

CVSS 6.6 · Medium EPSS 0.18% · P7
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I. Basic Information for CVE-2026-84716

Vulnerability Information
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Vulnerability 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
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
特权授予不正确
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 8 0:4.6.33-1.el8ap ~ * cpe:/a:redhat:ansible_automation_platform:2.5::el8
Red Hat Red Hat Ansible Automation Platform 2.5 for RHEL 9 0:4.6.33-1.el9ap ~ * cpe:/a:redhat:ansible_automation_platform:2.5::el8
Red Hat Red Hat Ansible Automation Platform 2.6 for RHEL 9 0:4.7.17-1.el9ap ~ * cpe:/a:redhat:ansible_automation_platform:2.6::el10
Red Hat Red Hat Ansible Automation Platform 2.6 1789673739 ~ * cpe:/a:redhat:ansible_automation_platform:2.6::el9
Red Hat Red Hat Ansible Automation Platform 2.7 1789580684 ~ * cpe:/a:redhat:ansible_automation_platform:2.7::el9

II. Public POCs for CVE-2026-84716

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III. Intelligence Information for CVE-2026-84716

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Other References for CVE-2026-84716 (6)

Same Patch Batch · Red Hat · 2026-09-23 · 46 CVEs total

CVE-2026-84474 9.9 CRITICAL Automation-controller: automation-controller-container: automation-controller: view_jobtem
CVE-2026-84502 9.9 CRITICAL Automation-controller: automation-controller-container: automation-controller: project scm
CVE-2026-84719 9.9 CRITICAL Automation-controller: automation-controller: workflowjobtemplate /copy/ deep-copy sanitiz
CVE-2026-75884 9.1 CRITICAL Awx: awx: privilege escalation to openshift namespace via pod_spec_override injection in c
CVE-2026-96275 8.8 HIGH Flatpak: flatpak: arbitrary write access as root via extra-data extraction
CVE-2026-84691 8.7 HIGH Automation-controller: automation-controller-container: automation-controller: format stri
CVE-2026-84683 8.7 HIGH Automation-controller: automation-controller-container: automation-controller: stored cros
CVE-2026-76648 8.5 HIGH Automation-controller: automation-controller-container: aap controller: copyapiview.post()
CVE-2026-84486 8.2 HIGH Automation-controller: automation-controller-container: automation-controller: unauthentic
CVE-2026-96512 7.8 HIGH Sudo: sudo: tz environment variable allows bypass of notbefore/notafter time-based authori
CVE-2026-96889 7.8 HIGH Librsvg: use-after-free when xml includes have duplicated entities
CVE-2026-84499 7.7 HIGH Automation-controller: automation-controller-container: automation-controller: write-only
CVE-2026-84706 7.6 HIGH Automation-controller: automation-controller-container: automation-controller: credential
CVE-2026-96541 7.5 HIGH Gnome-remote-desktop: gnome-remote-desktop: unauthenticated rdp sockets lack a handshake d
CVE-2026-75887 7.5 HIGH Openshift/console: openshift/console: unauthenticated path traversal in i18n locale handle
CVE-2026-88830 7.5 HIGH Busybox: busybox: tls montgomery reduction allocates bytes instead of digits, causing a pr
CVE-2026-88832 7.3 HIGH Busybox: busybox: romfs volume id parsing performs unbounded memcpy into fixed-size label
CVE-2026-85475 7.2 HIGH Automation-controller: automation-controller-container: automation-controller: rsyslog con
CVE-2026-75886 7.2 HIGH Openshift/console: openshift/console: unauthenticated reverse proxy to in-cluster catalogd
CVE-2026-84714 7.1 HIGH Automation-controller: automation-controller: incomplete sanitize_jinja() regex allows jin

Showing top 20 of 46 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Red Hat Ansible Automation Platform 2.5 for RHEL 8
Same vendor: Red Hat
Same weakness: CWE-266

V. Comments for CVE-2026-84716

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