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TI-2026-10632 Aliases CVE-2026-12383GHSA-c4xf-fv75-hwxm

Eda-server: externaleventstreamviewset trusts subject header without validation and leaks expected dn

Priority LOW 39CWE-345Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Red Hat. Impact type from CWE-345.

Summary

A flaw was found in the Event-Driven Ansible (EDA) server. The ExternalEventStreamViewSet uses permissive access controls (permission_classes=[AllowAny], authentication_classes=[]) and relies solely on the Subject HTTP header value for mTLS authentication without verifying that the header originated from a trusted proxy. Additionally, the expected certificate Distinguished Name is leaked in the 403 error response body. An attacker who can reach the EDA API endpoint with a spoofed Subject header can inject arbitrary events into mTLS-protected event streams, triggering downstream automation actions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00279 20th percentileScored 2026-11-07
Fix Fixed Red Hat: 3 advisories

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
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—1.1.21-1.el8apPatch availableCNA
Red HatRed Hat Ansible Automation Platform 2.5 for RHEL 9—1.1.21-1.el9apPatch availableCNA
Red HatRed Hat Ansible Automation Platform 2.6 for RHEL 9—1.2.11-1.el9apPatch availableCNA
Red HatRed Hat Ansible Automation Platform 2.7—1785374869Patch availableCNA
  • Red Hat Ansible Automation Platform 2.5 for RHEL 8 VendorRed Hat Affected — Fixed in 1.1.21-1.el8ap Patch available CNA
  • Red Hat Ansible Automation Platform 2.5 for RHEL 9 VendorRed Hat Affected — Fixed in 1.1.21-1.el9ap Patch available CNA
  • Red Hat Ansible Automation Platform 2.6 for RHEL 9 VendorRed Hat Affected — Fixed in 1.2.11-1.el9ap Patch available CNA
  • Red Hat Ansible Automation Platform 2.7 VendorRed Hat Affected — Fixed in 1785374869 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 3 advisories

  • RHSA-2026:50336 Released 2026-08-04 · Red Hat rating Important
    Red Hat Ansible Automation Platform 2.6 Product Security and Bug Fix Update
    • Red Hat Ansible Automation Platform 2.6 for RHEL 10 receptor-1.6.7-1.el10ap, receptorctl-1.6.7-1.el10ap
    • Red Hat Ansible Automation Platform 2.6 for RHEL 9 automation-controller-4.7.15-2.el9ap, automation-controller-cli-4.7.15-2.el9ap, automation-controller-server-4.7.15-2.el9ap +15
  • RHSA-2026:50340 Released 2026-08-04 · Red Hat rating Important
    Red Hat Ansible Automation Platform 2.7 Container Release Update
    • Red Hat Ansible Automation Platform 2.7 registry.redhat.io/ansible-automation-platform-27/controller-rhel9, registry.redhat.io/ansible-automation-platform-27/de-minimal-rhel9, registry.redhat.io/ansible-automation-platform-27/de-supported-rhel9 +7
  • RHSA-2026:50319 Released 2026-08-04 · Red Hat rating Important
    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-4.6.31-1.el8ap, automation-eda-controller-1.1.21-1.el8ap, automation-eda-controller-base-1.1.21-1.el8ap +11
    • Red Hat Ansible Automation Platform 2.5 for RHEL 9 automation-controller-venv-tower-4.6.31-1.el9ap, automation-eda-controller-1.1.21-1.el9ap, automation-eda-controller-base-1.1.21-1.el9ap +11

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Red Hat Ansible Automation Platform 2.6 for RHEL 9, Red Hat Ansible Automation Platform 2.7 — RHSA-2026:50336

    2 records Highest priority Priority MEDIUM 1 MEDIUM, 1 LOW

    Other records, highest priority first

    • TI-2026-14929 Aap-gateway: aap-gateway: authentication bypass in event-driven ansible via forged http headerPriority MEDIUM 42
    Show all 2 records → Advisory →

Vendor assessments

Red Hat

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

ProductStatusPlan or fix
Red Hat Ansible Automation Platform 2.5 for RHEL 8Fixed RHSA-2026:50319
Red Hat Ansible Automation Platform 2.5 for RHEL 9Fixed RHSA-2026:50319
Red Hat Ansible Automation Platform 2.6 for RHEL 9Fixed RHSA-2026:50336
Red Hat Ansible Automation Platform 2.7Fixed RHSA-2026:50340
Not affected: 5 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 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-2026-12383
  2. 2026-10-03 Alias added: GHSA-c4xf-fv75-hwxm

References

Advisory 3

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