Strategic Overview
- Status
- Patched in 3.1.4
- Affected Plugin
- Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress
- Affected Version
3.0.0 – 3.1.3- CVSS
- 9.8Critical
- Weakness type
- CWE-434 · Unrestricted Upload of File with Dangerous Type
- CVE
CVE-2021-34624
At a glance
CVE-2021-34624 is a critical-severity Unrestricted Upload of File with Dangerous Type vulnerability in the Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content WordPress plugin, affecting versions 3.0.0 – 3.1.3. It carries a CVSS score of 9.8 (reachable over the network; low attack complexity; high confidentiality, integrity, availability impact). Exploitation requires no authentication. The issue is fixed in version 3.1.4; sites on affected versions should update now. Disclosed June 2021, reported by Chloe Chamberland.
Vulnerability Overview
A vulnerability in the file uploader component found in the ~/src/Classes/FileUploader.php file of the ProfilePress WordPress plugin made it possible for users to upload arbitrary files during user registration or during profile updates. This issue affects versions 3.0.0 - 3.1.3.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user. A successful exploit has high impact on confidentiality, integrity, availability — full site compromise territory.
CWE-434: Unrestricted Upload of File with Dangerous Type
Reaching this weakness in Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content 3.0.0 – 3.1.3 takes a caller who can reach the endpoint. An unrestricted file upload lets a caller store a file whose type or destination the application does not properly constrain.
If an uploaded file lands anywhere the server will execute, the flaw becomes remote code execution and the site should be treated as fully compromised. For Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content the fix is 3.1.4: builds 3.0.0 – 3.1.3 are affected, anything from 3.1.4 onward is not.
Remediation
Update to version 3.1.4, or a newer patched version
How does WordSec protect against this?
The attempt arrives as an ordinary request to Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content: WordSec's web application firewall inspects request payloads before WordPress loads them. Classes like this one can leave something behind, so the staged malware scanner is the second half: it looks for dropped files and modified code rather than for the request that created them. None of that substitutes for the fix: Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content 3.1.4 closes this, and updating the plugin is the step that ends it.
- Firewall
- Scanner
- Alerts
External References
Related records
Same weakness class
Other vulnerabilities in Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress
- 9.8CVE-2026-12497: ProfilePress <= 4.16.17 Privilege Escalation
CVE-2026-12497 - 9.8CVE-2021-34622: ProfilePress 3.0 - 3.1.3 Privilege Escalation
CVE-2021-34622 - 9.8CVE-2021-34621: User Registration Privilege Escalation
CVE-2021-34621 - 8.1CVE-2026-3453: ProfilePress IDOR
CVE-2026-3453 - 7.3CVE-2026-19848: Paid Membership Plugin Arbitrary Shortcode Execution
CVE-2026-19848 - 7.3CVE-2023-41954: ProfilePress <= 4.13.1 Limited Privilege Escalation
CVE-2023-41954 - 7.2CVE-2022-47444: ProfilePress <= 4.5.3 Cross-Site Scripting
CVE-2022-47444 - 7.2CVE-2023-23830: ProfilePress <= 4.5.4 Stored Cross-Site Scripting
CVE-2023-23830
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