CVE-2026-18141 (GCVE-0-2026-18141)

Vulnerability from cvelistv5 – Published: 2026-07-31 15:34 – Updated: 2026-08-04 21:42
VLAI
Title
Aap-gateway: aap-gateway: authentication bypass in event-driven ansible via forged http header
Summary
A flaw was found in aap-gateway, a component of Ansible Automation Platform's Event-Driven Ansible (EDA). An unauthenticated remote attacker can bypass mutual Transport Layer Security (mTLS) authentication for event streams. This is achieved by manipulating the event stream URL and forging the HTTP Subject header. The system also inadvertently discloses the expected certificate subject in error messages, which simplifies the attack. This vulnerability allows an attacker to inject arbitrary events into EDA, potentially triggering automated workflows.
Severity
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-295 - Improper Certificate Validation
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:50336 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:50340 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:50479 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-18141 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2508155 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat Red Hat Ansible Automation Platform 2.6 for RHEL 9 Unaffected: 0:1.2.11-1.el9ap , < * (rpm)
    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
 Create a notification for this product.
Red Hat Red Hat Ansible Automation Platform 2.6 Unaffected: 1785780020 , < * (rpm)
    cpe:/a:redhat:ansible_automation_platform:2.6::el9
 Create a notification for this product.
Red Hat Red Hat Ansible Automation Platform 2.7 Unaffected: 1785435970 , < * (rpm)
    cpe:/a:redhat:ansible_automation_platform:2.7::el9
 Create a notification for this product.
Red Hat Red Hat Ansible Automation Platform 2     cpe:/a:redhat:ansible_automation_platform:2
 Create a notification for this product.
Date Public
2026-07-31 15:28
Show details on NVD website
To clipboard 

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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