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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
mailgun Mailgun for WordPress unaffected
Version Status Constraints
0 affected ≤ 2.2.0

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Project Subscriptions

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Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L259 cve-icon
https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L323 cve-icon
https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L331 cve-icon
https://plugins.trac.wordpress.org/browser/mailgun/tags/2.1.10/mailgun.php#L557 cve-icon
https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L259 cve-icon
https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L323 cve-icon
https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L331 cve-icon
https://plugins.trac.wordpress.org/browser/mailgun/trunk/mailgun.php#L557 cve-icon
https://www.wordfence.com/threat-intel/vulnerabilities/id/110e888d-69fc-4682-b908-2b62288c5227?source=cve cve-icon
History

Sat, 22 Aug 2026 08:45:00 +0000

Type Values Removed Values Added
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.
Title Mailgun for WordPress <= 2.2.0 - Unauthenticated Server-Side Request Forgery (SSRF) via 'addresses' Array Keys
Weaknesses CWE-918
References
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: Wordfence

Published:

Updated: 2026-08-22T08:26:38.970Z

Reserved: 2026-08-21T19:58:10.111Z

Link: CVE-2026-78003

cve-icon Vulnrichment

No data.

cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses