CVE WatchAug 22, 2026

CVE-2026-78003

The Mailgun for WordPress plugin for WordPress is vulnerable to Server-Side Request Forgery (SSRF) via path traversal in versions up to and

CVSS

9.8

Critical

EPSS

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KEV

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Exploit Today

0-100

Published: Aug 22, 2026 · Last modified: Aug 22, 2026 · CWE-918

EPSS · 30d

Not enough EPSS history yet.

Technical 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.

Official references

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