Paid Memberships Pro <= 2.12.3 - Authenticated (Subscriber+) Arbitrary File Upload

Unrestricted Upload of File with Dangerous Type
CVE CVE-2023-6187
CVSS High (7.5)
Publicly Published November 16, 2023
Last Updated January 22, 2024
Researcher István Márton
Description

The Paid Memberships Pro plugin for WordPress is vulnerable to arbitrary file uploads due to insufficient file type validation in the 'pmpro_paypalexpress_session_vars_for_user_fields' function in versions up to, and including, 2.12.3. This makes it possible for authenticated attackers with subscriber privileges or above, to upload arbitrary files on the affected site's server which may make remote code execution possible. This can be exploited if 2Checkout (deprecated since version 2.6) or PayPal Express is set as the payment method and a custom user field is added that is only visible at profile, and not visible at checkout according to its settings.

References

1 affected software package

Software Type Plugin
Software Slug paid-memberships-pro (view on wordpress.org)
Patched? Yes
Affected Version
  • <= 2.12.3
Patched Version
  • 2.12.4
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