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TI-2026-58236 Aliases CVE-2026-84716GHSA-hcpg-prc4-w26w

Automation-controller: automation-controller: instance install_bundle issues 10-year…

Priority LOW 28CWE-266Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
High
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-266.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00178 7th percentileScored 2026-11-07
Fix Fixed Red Hat: 4 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Red HatRed Hat Ansible Automation Platform 2.5 for RHEL 8—4.6.33-1.el8apPatch availableCNA
Red HatRed Hat Ansible Automation Platform 2.5 for RHEL 8—4.6.33-1.el8apPatch availableCNA
Red HatRed Hat Ansible Automation Platform 2.5 for RHEL 9—4.6.33-1.el9apPatch availableCNA
Red HatRed Hat Ansible Automation Platform 2.5 for RHEL 9—4.6.33-1.el9apPatch availableCNA
Red HatRed Hat Ansible Automation Platform 2.6 for RHEL 9—4.7.17-1.el9apPatch availableCNA
Red HatRed Hat Ansible Automation Platform 2.6 for RHEL 9—4.7.17-1.el9apPatch availableCNA
Red HatRed Hat Ansible Automation Platform 2.6—1789673739Patch availableCNA
Red HatRed Hat Ansible Automation Platform 2.7—1789580684Patch availableCNA
  • Red Hat Ansible Automation Platform 2.5 for RHEL 8 VendorRed Hat Affected — Fixed in 4.6.33-1.el8ap Patch available CNA
  • Red Hat Ansible Automation Platform 2.5 for RHEL 8 VendorRed Hat Affected — Fixed in 4.6.33-1.el8ap Patch available CNA
  • Red Hat Ansible Automation Platform 2.5 for RHEL 9 VendorRed Hat Affected — Fixed in 4.6.33-1.el9ap Patch available CNA
  • Red Hat Ansible Automation Platform 2.5 for RHEL 9 VendorRed Hat Affected — Fixed in 4.6.33-1.el9ap Patch available CNA
  • Red Hat Ansible Automation Platform 2.6 for RHEL 9 VendorRed Hat Affected — Fixed in 4.7.17-1.el9ap Patch available CNA
  • Red Hat Ansible Automation Platform 2.6 for RHEL 9 VendorRed Hat Affected — Fixed in 4.7.17-1.el9ap Patch available CNA
  • Red Hat Ansible Automation Platform 2.6 VendorRed Hat Affected — Fixed in 1789673739 Patch available CNA
  • Red Hat Ansible Automation Platform 2.7 VendorRed Hat Affected — Fixed in 1789580684 Patch available CNA

CPE names CNA · 12

CPEVersionsRoleVendor
cpe:/a:redhat:ansible_automation_platform:2.5::el82.5—Red Hat
cpe:/a:redhat:ansible_automation_platform:2.5::el92.5—Red Hat
cpe:/a:redhat:ansible_automation_platform_developer:2.5::el82.5—Red Hat
cpe:/a:redhat:ansible_automation_platform_developer:2.5::el92.5—Red Hat
cpe:/a:redhat:ansible_automation_platform_inside:2.5::el82.5—Red Hat
cpe:/a:redhat:ansible_automation_platform_inside:2.5::el92.5—Red Hat
cpe:/a:redhat:ansible_automation_platform:2.6::el102.6—Red Hat
cpe:/a:redhat:ansible_automation_platform:2.6::el92.6—Red Hat
cpe:/a:redhat:ansible_automation_platform_developer:2.6::el102.6—Red Hat
cpe:/a:redhat:ansible_automation_platform_developer:2.6::el92.6—Red Hat
  • cpe:/a:redhat:ansible_automation_platform:2.5::el8 Versions 2.5 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform:2.5::el9 Versions 2.5 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform_developer:2.5::el8 Versions 2.5 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform_developer:2.5::el9 Versions 2.5 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform_inside:2.5::el8 Versions 2.5 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform_inside:2.5::el9 Versions 2.5 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform:2.6::el10 Versions 2.6 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform:2.6::el9 Versions 2.6 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform_developer:2.6::el10 Versions 2.6 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform_developer:2.6::el9 Versions 2.6 — ·Red Hat
Show 2 more CPE
CPEVersionsRoleVendor
cpe:/a:redhat:ansible_automation_platform_inside:2.6::el92.6—Red Hat
cpe:/a:redhat:ansible_automation_platform:2.7::el92.7—Red Hat
  • cpe:/a:redhat:ansible_automation_platform_inside:2.6::el9 Versions 2.6 — ·Red Hat
  • cpe:/a:redhat:ansible_automation_platform:2.7::el9 Versions 2.7 — ·Red Hat

Remediation

Red Hat 4 advisories

  • RHSA-2026:71179 Released 2026-09-23 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.6 Container Release Update
    • Red Hat Ansible Automation Platform 2.6 registry.redhat.io/ansible-automation-platform-26/aap-must-gather-rhel9, registry.redhat.io/ansible-automation-platform-26/controller-rhel9, registry.redhat.io/ansible-automation-platform-26/de-minimal-rhel9 +10
  • RHSA-2026:71114 Released 2026-09-23 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.5 Product Security and Bug Fix Update
    • Red Hat Ansible Automation Platform 2.5 for RHEL 8 automation-controller-venv-tower-4.6.33-1.el8ap, automation-gateway-proxy-server-2.5.10-8.el8ap, automation-gateway-server-2.5.20260923-1.el8ap +3
    • Red Hat Ansible Automation Platform 2.5 for RHEL 9 automation-controller-venv-tower-4.6.33-1.el9ap, automation-gateway-proxy-server-2.6.17-3.el9ap, automation-gateway-server-2.5.20260923-1.el9ap +3
  • RHSA-2026:71177 Released 2026-09-23 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.7 Container Release Update
    • Red Hat Ansible Automation Platform 2.7 registry.redhat.io/ansible-automation-platform-27/aap-must-gather-rhel9, registry.redhat.io/ansible-automation-platform-27/controller-rhel9, registry.redhat.io/ansible-automation-platform-27/de-minimal-rhel9 +4
Show 1 more Red Hat advisories
  • RHSA-2026:71113 Released 2026-09-23 · Red Hat rating Critical
    Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update
    • Red Hat Ansible Automation Platform 2.6 for RHEL 10 python-sqlparse-0.6.0-1.el10ap, python3-sqlparse-0.6.0-1.el10ap, receptor-1.6.8-1.el10ap
    • Red Hat Ansible Automation Platform 2.6 for RHEL 9 automation-controller-4.7.17-1.el9ap, automation-controller-cli-4.7.17-1.el9ap, automation-controller-server-4.7.17-1.el9ap +7

Vendor assessments

Red Hat

Red Hat rating: Moderate. Red Hat's page for this CVE →

ProductStatusPlan or fix
Red Hat Ansible Automation Platform 2.5 for RHEL 8Fixed RHSA-2026:71114
Red Hat Ansible Automation Platform 2.5 for RHEL 9Fixed RHSA-2026:71114
Red Hat Ansible Automation Platform 2.6Fixed RHSA-2026:71179
Red Hat Ansible Automation Platform 2.6 for RHEL 9Fixed RHSA-2026:71113
Red Hat Ansible Automation Platform 2.7Fixed RHSA-2026:71177
Not affected: 6 products
  • Red Hat Ansible Automation Platform 2.5 for RHEL 8
  • Red Hat Ansible Automation Platform 2.5 for RHEL 9
  • Red Hat Ansible Automation Platform 2.6
  • Red Hat Ansible Automation Platform 2.6 for RHEL 10
  • Red Hat Ansible Automation Platform 2.6 for RHEL 9
  • Red Hat Ansible Automation Platform 2.7

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-84716
  2. 2026-10-03 Alias added: GHSA-hcpg-prc4-w26w
  3. 2026-11-06 Affected versions changed · CNA
  4. 2026-11-06 Fix available: RHSA-2026:71177 · Red Hat

References

Advisory 4

Other 2

  • TI-2019-15875 Protection mechanism failure in Jenkins Pipeline: Groovy Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-15874 Protection mechanism failure in Jenkins Script Security Plugin KEVCVSS 3.1CRITICAL 9.9
  • TI-2019-08259 Underflow in PHP-FPM can lead to RCE KEVCVSS 3.1CRITICAL 9.8
  • TI-2019-05363 Code injection in Elastic Kibana KEVCVSS 3.1CRITICAL 10.0
  • TI-2019-03949 Out-of-bounds write in ESXi and Horizon DaaS KEVCVSS 3.1CRITICAL 9.8
  • TI-2018-16080 A code execution vulnerability exists in the Stapler web framework used by Jenkins 2.153… KEVCVSS 3.1CRITICAL 9.8
See all 7413 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences