WordPress security changelog
HIGH CVE-2023-6187 Modified

Paid Memberships Pro: Dangerous file upload

Paid Memberships Pro is affected by dangerous file upload. Exploitation requires an authenticated WordPress account. Successful exploitation can place attacker-controlled executable content on the server and may lead to full site compromise.

CVE / CNA score 7.5 CVSS 3.1 · security@wordfence.com
NVD score 8.8 CVSS 3.1 · nvd@nist.gov
Component
Paid Memberships Pro
Plugin slug
paid-memberships-pro
Affected
See vendor advisory
Safe version
See mitigation notes
Published
Nov 18, 2023
Weakness
CWE-434 — Unrestricted Upload of File with Dangerous Type

This CVE was published Nov 18, 2023 and is one of 23 known issues for this plugin.

What to do

Update, patch or deactivate.

Update Paid Memberships Pro to a release outside the affected range, or disable and remove it until a fixed version is available.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical 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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

Primary and upstream sources