U.S. flag   An official website of the United States government
Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock (Dot gov) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-78003 Detail

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.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

By selecting these links, you will be leaving NIST webspace. We have provided these links to other web sites because they may have information that would be of interest to you. No inferences should be drawn on account of other sites being referenced, or not, from this page. There may be other web sites that are more appropriate for your purpose. NIST does not necessarily endorse the views expressed, or concur with the facts presented on these sites. Further, NIST does not endorse any commercial products that may be mentioned on these sites. Please address comments about this page to [email protected].

URL Source(s) Tag(s)
https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L259 Wordfence
https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L323 Wordfence
https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L331 Wordfence
https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L557 Wordfence
https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L259 Wordfence
https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L323 Wordfence
https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L331 Wordfence
https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L557 Wordfence
https://www.wordfence.com/threat-intel/vulnerabilities/id/110e888d-69fc-4682-b908-2b62288c5227?source=cve Wordfence

Weakness Enumeration

CWE-ID CWE Name Source
CWE-918 Server-Side Request Forgery (SSRF) Wordfence  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-78003
NVD Published Date:
08/22/2026
NVD Last Modified:
08/22/2026
Source:
Wordfence