{"id":"CVE-2026-78003","aliases":["EUVD-2026-64242","GHSA-jr9c-873v-948h"],"status":"published","title":"Mailgun for WordPress \u003c= 2.2.0 - Unauthenticated Server-Side Request Forgery (SSRF) via 'addresses' Array Keys","description":"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.","severity":{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00791,"percentile":0.56627,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-918"],"published":"2026-08-22T08:26:38Z","modified":"2026-10-12T16:10:00Z","products":[{"vendor":"mailgun","product":"mailgun for wordpress"},{"vendor":"unknown","product":"mailgun for wordpress"}],"references":[{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/110e888d-69fc-4682-b908-2b62288c5227?source=cve"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L557"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L259"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L259"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L323"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L323"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L331"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L331"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L557"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-78003"},{"url":"https://github.com/advisories/GHSA-jr9c-873v-948h"}],"sources":{"cve":[{"id":"CVE-2026-78003","title":"Mailgun for WordPress \u003c= 2.2.0 - Unauthenticated Server-Side Request Forgery (SSRF) via 'addresses' Array Keys","description":"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.","status":"published","published":"2026-08-22T08:26:38.97Z","modified":"2026-08-25T13:15:26.345Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T13:34:59.78118Z"}],"euvd":[{"id":"EUVD-2026-64242","description":"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.","status":"published","published":"2026-08-22T08:26:38Z","modified":"2026-08-25T13:15:26Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-02T18:01:33.385611Z"}],"ghsa":[{"id":"GHSA-jr9c-873v-948h","title":"The Mailgun for WordPress plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF...","description":"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.","status":"published","published":"2026-08-22T09:30:25Z","modified":"2026-08-22T09:30:32Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T15:10:50.919771Z"}],"nvd":[{"id":"CVE-2026-78003","description":"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.","status":"published","published":"2026-08-22T09:16:53.543Z","modified":"2026-10-12T16:10:00.22Z","cvss":[{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-918"],"updated_at":"2026-11-02T14:12:40.665005Z"}]}}