{"id":"CVE-2026-78003","title":"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","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 input validation in the add_list() function, which a…","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-918"],"published":"2026-08-22","updated":"2026-08-22","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-78003","references":[{"url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L259","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L323","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L331","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L557","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L259","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L323","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L331","label":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L557","label":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/110e888d-69fc-4682-b908-2b62288c5227?source=cve","label":"security@wordfence.com"}],"tags":["nvd"],"epss":0.00873,"epssPercentile":0.57365,"ingestedAt":"2026-08-23T04:42:13.750Z","slug":"CVE-2026-78003","body":"## Overview\n\nThe 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}