6.4
/ 10
MEDIUM
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Description
The Mailgun Subscriptions plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'mailgun_subscription_form' shortcode in all versions up to, and including, 1.3.1 due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Basic Information
ID
CVE-2025-11876
Source
Wordfence
Published
Dec 12, 2025 at 07:20
Affected Product
Vendor
jbrinley
Product
Mailgun Subscriptions
Version
*
Affected Versions
jbrinley Mailgun Subscriptions *
CWE Classification
References
- www.wordfence.com /threat-intel/vulnerabilities/id/149e60cc-9612-4651-b02d-4b68a3533d36
- plugins.trac.wordpress.org /browser/mailgun-subscriptions/tags/1.2.0/Mailgun_Subscriptions/Subscription_Form.php
- github.com /flightless/mailgun-subscriptions/pull/8/commits/a8b597e3a09f3a1b76436d09de434fd9bfe29f64
- plugins.trac.wordpress.org /changeset