Paid Memberships Pro <= 2.12.3 — Authenticated (Subscriber+) Arbitrary File Upload
CVE-2023-6187Published · Updated Action summary
Affected: ≤2.12.3Update to 2.12.4 or newer
All remediation steps- Severity
- High7.5
- CVSS
- 7.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:HWhat does this vector mean?
AV:NAttack vector- Network
AC:HAttack complexity- High
PR:LPrivileges required- Low
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:HIntegrity- High
A:HAvailability- High
- Weakness
- CWE-434 Arbitrary File Upload
- Required access
- Unknown
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions paid-memberships-pro
- Affected≤ 2.12.3
- Patched in2.12.4
Update to 2.12.4 or newer.
You are affected if you run ≤ 2.12.3. Version 2.12.4 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions.
- No admin access? Run a passive check of your site. It reads public files only.
What to do
- Update to version 2.12.4, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to István Márton.
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.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Paid Memberships Pro – Content Restriction, User Registration, & Paid Subscriptions
All 28| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Subscriber+) Stored Cross-Site Scripting ≤3.8.1Update to 3.8.2 | CVE-2026-15016 | |
| High7.1 | Missing Authorization to Authenticated (Subscriber+) Stripe Webhook Deletion and Payment Processing Disruption ≤3.6.5Update to 3.6.6 | CVE-2026-4100 | |
| Critical9.1 | Authenticated (Administrator+) SQL Injection ≤3.0.5Update to 3.0.6 | CVE-2024-37486 | |
| Medium5.3 | Unauthenticated Insecure Direct Object Reference to Order Status Update ≤3.0.4Update to 3.0.5 | CVE-2024-37277 | |
| Medium5.4 | Cross-Site Request Forgery to Membership Modification ≤2.12.10Update to 3.0 | CVE-2024-1407 |
- Medium6.4Authenticated (Subscriber+) Stored Cross-Site Scripting
≤3.8.1Update to 3.8.2
- High7.1Missing Authorization to Authenticated (Subscriber+) Stripe Webhook Deletion and Payment Processing Disruption
≤3.6.5Update to 3.6.6
- Critical9.1Authenticated (Administrator+) SQL Injection
≤3.0.5Update to 3.0.6
- Medium5.3Unauthenticated Insecure Direct Object Reference to Order Status Update
≤3.0.4Update to 3.0.5
- Medium5.4Cross-Site Request Forgery to Membership Modification
≤2.12.10Update to 3.0
Same weakness (Arbitrary File Upload)
All Arbitrary File Upload| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header | CVE-2026-120688 | |
| Critical9.8 | Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission | CVE-2026-125055 | |
| Critical9.8 | Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter | CVE-2026-119077 | |
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter | CVE-2026-121518 |
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment User-Agent Header
EZ SQL Reports Shortcode Widget and DB Backup
≤5.25.25Update to 5.26.45
- Critical9.8Unauthenticated Arbitrary File Upload via File Upload via Public Form Submission
Chatterbug Forms – Fast, Flexible WordPress Form Builder
≤1.0.2Update to 1.1
- Critical9.8Unauthenticated PHP Object Injection to Remote Code Execution via 'form' Parameter
ELEX WordPress HelpDesk & Customer Ticketing System
≤3.3.9Update to 3.4.0
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
Customer Reviews for WooCommerce
≤5.127.0Update to 5.128.0
Timeline
CVE published
Severity high, CVSS 7.5
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.