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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.

PUBLISHED Reserved 2025-10-16 | Published 2025-12-12 | Updated 2025-12-12 | Assigner Wordfence




MEDIUM: 6.4CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N

Problem types

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Product status

Default status
unaffected

* (semver)
affected

Timeline

2025-11-25:Vendor Notified
2025-12-11:Disclosed

Credits

Gilang Asra Bilhadi finder

References

www.wordfence.com/...-9612-4651-b02d-4b68a3533d36?source=cve

plugins.trac.wordpress.org/...riptions/Subscription_Form.php

github.com/...mmits/a8b597e3a09f3a1b76436d09de434fd9bfe29f64

plugins.trac.wordpress.org/...riptions&sfp_email=&sfph_mail=

cve.org (CVE-2025-11876)

nvd.nist.gov (CVE-2025-11876)

Download JSON

Data based on CVE®. Copyright © 1999-2025, The MITRE Corporation. All rights reserved.