{"id":"CVE-2026-84721","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-84721","generatedAt":"2026-10-28T02:17:37.567Z","title":"A server-side request forgery flaw was found in the Ansible Automation Platform automation-controller email notification backend.","description":"A server-side request forgery flaw was found in the Ansible Automation Platform\nautomation-controller email notification backend. The email backend passes the user-supplied SMTP\nhost and port from a notification template directly to the SMTP client without validating that\nthe target is not an internal, loopback, link-local, or reserved address. An authenticated user\nwith organization notification-admin permission can create or modify an email notification\ntemplate pointing at an arbitrary internal address, trigger a test, and have the controller task\nprocess open a raw TCP connection to that address. The resulting connection error is reflected\nback through the notification record, providing a three-state internal port-scan oracle (open,\nclosed, filtered) over the control-plane's cluster network, including the in-cluster Kubernetes\nAPI. When a shared organization template holds a stored SMTP password, redirecting the host can\nalso cause that credential to be transmitted to an attacker-controlled server.","published":"2026-09-23T20:17:19.000Z","lastModified":"2026-10-16T12:16:42.000Z","status":"Awaiting Analysis","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":6.4,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N"},"cwe":["CWE-918"],"affected":[],"epss":{"score":0.00294,"percentile":0.21843,"date":"2026-10-26","history":[{"date":"2026-09-24","score":0.00171,"percentile":0.05732}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.29%). Track it; it rarely justifies an emergency change on its own."},"changes":[{"kind":"new","label":"New CVE","at":"2026-09-23T20:17:19.000Z","detail":{"score":"6.4","severity":"MEDIUM","publishedAt":"2026-09-23T20:17:18.890Z"},"summary":"New CVE, medium severity (CVSS 6.4)."}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:71177","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-84721","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2527220","source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-84721","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}