A server-side request forgery flaw was found in the Ansible Automation Platform
automation-controller email notification backend. The email backend passes the user-supplied SMTP
host and port from a notification template directly to the SMTP client without validating that
the target is not an internal, loopback, link-local, or reserved address. An authenticated user
with organization notification-admin permission can create or modify an email notification
template pointing at an arbitrary internal address, trigger a test, and have the controller task
process open a raw TCP connection to that address. The resulting connection error is reflected
back through the notification record, providing a three-state internal port-scan oracle (open,
closed, filtered) over the control-plane's cluster network, including the in-cluster Kubernetes
API. When a shared organization template holds a stored SMTP password, redirecting the host can
also cause that credential to be transmitted to an attacker-controlled server.
automation-controller email notification backend. The email backend passes the user-supplied SMTP
host and port from a notification template directly to the SMTP client without validating that
the target is not an internal, loopback, link-local, or reserved address. An authenticated user
with organization notification-admin permission can create or modify an email notification
template pointing at an arbitrary internal address, trigger a test, and have the controller task
process open a raw TCP connection to that address. The resulting connection error is reflected
back through the notification record, providing a three-state internal port-scan oracle (open,
closed, filtered) over the control-plane's cluster network, including the in-cluster Kubernetes
API. When a shared organization template holds a stored SMTP password, redirecting the host can
also cause that credential to be transmitted to an attacker-controlled server.
Metrics
Affected Vendors & Products
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Wed, 23 Sep 2026 19:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | A server-side request forgery flaw was found in the Ansible Automation Platform automation-controller email notification backend. The email backend passes the user-supplied SMTP host and port from a notification template directly to the SMTP client without validating that the target is not an internal, loopback, link-local, or reserved address. An authenticated user with organization notification-admin permission can create or modify an email notification template pointing at an arbitrary internal address, trigger a test, and have the controller task process open a raw TCP connection to that address. The resulting connection error is reflected back through the notification record, providing a three-state internal port-scan oracle (open, closed, filtered) over the control-plane's cluster network, including the in-cluster Kubernetes API. When a shared organization template holds a stored SMTP password, redirecting the host can also cause that credential to be transmitted to an attacker-controlled server. | |
| Title | Automation-controller: automation-controller: email notification backend allows ssrf via user-controlled smtp host/port (internal port-scan oracle, smtp password exfil) | |
| First Time appeared |
Redhat
Redhat ansible Automation Platform |
|
| Weaknesses | CWE-918 | |
| CPEs | cpe:/a:redhat:ansible_automation_platform:2 | |
| Vendors & Products |
Redhat
Redhat ansible Automation Platform |
|
| References |
| |
| Metrics |
cvssV3_1
|
Projects
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MITRE
Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-09-23T19:40:38.686Z
Reserved: 2026-09-02T01:36:54.923Z
Link: CVE-2026-84721
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-09-23T20:17:18.890
Modified: 2026-09-23T20:17:18.890
Link: CVE-2026-84721
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses