{"id":"CVE-2026-78003","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-78003","summary":"The Mailgun for WordPress plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) via path traversal in versions up to and including 2.2.0. This is due to insufficient…","details":"The Mailgun for WordPress plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) via path traversal in versions up to and including 2.2.0. This is due to insufficient input validation in the add_list() function, which accepts user-controlled array keys from $_POST['addresses'], passes them through sanitize_text_field(). This makes it possible for unauthenticated attackers to make authenticated POST requests to any Mailgun API endpoint using the WordPress site's API key, including creating inbound email-forwarding routes that can intercept password reset emails, leading to administrator account takeover.","published":"2026-08-22T09:16:53.543","modified":"2026-08-22T09:16:53.543","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L259"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L323"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L331"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L557"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L259"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L323"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L331"},{"type":"WEB","url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L557"},{"type":"WEB","url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/110e888d-69fc-4682-b908-2b62288c5227?source=cve"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-08-22T09:16:53.543"}}