CVE-2026-84721

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.

CVSS v3 6.4 MEDIUM

6.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.1 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:71177
https://access.redhat.com/security/cve/CVE-2026-84721
https://bugzilla.redhat.com/show_bug.cgi?id=2527220

Configurations

No configuration.

History

24 Sep 2026, 07:16

Type	Values Removed	Values Added
References		() https://access.redhat.com/errata/RHSA-2026:71177 -

23 Sep 2026, 20:17

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-23 20:17

Updated : 2026-10-16 12:16

NVD link : CVE-2026-84721

Mitre link : CVE-2026-84721

CVE.ORG link : CVE-2026-84721

JSON object : View

Products Affected

No product.

CWE

CWE-918

Server-Side Request Forgery (SSRF)

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