Mailgun vulnerabilities

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Published CVEs affecting Mailgun products: 1 record(s), with severity, exploitation and fixes.

Mailgun for WordPress 1

Exploited only (KEV) →

CVE-2026-78003 Critical · 9.8 CWE-918 Aug 22, 2026

Mailgun for WordPress <= 2.2.0 - Unauthenticated Server-Side Request Forgery (SSRF) via 'addresses' Array Keys

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.