CVE-2023-6187 in the critical feed json
Paid Memberships Pro <= 2.12.3 - Authenticated (Subscriber+) Arbitrary File Upload
published 2023-11-18 2 y ago modified 2026-06-17 4 mo ago also EUVD-2023-58436
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 51.3%
- EPSS 51.3% chance of exploitation in 30 days, percentile 98%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
Exploit prediction
51.25% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected products
- strangerstudios Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions
Classification
- Weakness
-
- CWE-434 Unrestricted Upload of File with Dangerous Type
- Technology feeds
References
-
wordfence.com
/threat-intel/vulnerabilities/id/5979f2eb-2ca8-4b06-814c-c4236bb81af0?source=cve
patch, third-party-advisory
-
plugins.trac.wordpress.org
/changeset/2997319/paid-memberships-pro/tags/2.12.4/includes/functions.php
patch
-
plugins.trac.wordpress.org
/changeset/2997319/paid-memberships-pro/tags/2.12.4/includes/fields.php
patch
-
plugins.trac.wordpress.org
/browser/paid-memberships-pro/tags/2.12.3/includes/fields.php#L564
product
-
paidmembershipspro.com
/pmpro-update-2-12-4/
product
Sources
- CVE List CVE-2023-6187
- NVD CVE-2023-6187
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.