ProfilePress <= 3.1.7 - Authenticated Stored Cross-Site Scripting
Strategic Overview
- Status
- Patched in 3.1.8
- Affected Plugin
- Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress
- Affected Version
< 3.1.8- CVSS
- 5.5Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2021-24450
At a glance
CVE-2021-24450 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content WordPress plugin, affecting versions < 3.1.8. It carries a CVSS score of 5.5 (reachable over the network; low attack complexity). Exploitation requires an authenticated account. The issue is fixed in version 3.1.8; sites on affected versions should update now. Disclosed June 2021, reported by Vaibhav Koli.
Vulnerability Overview
The User Registration, User Profiles, Login & Membership – ProfilePress (Formerly WP User Avatar) WordPress plugin before 3.1.8 did not sanitise or escape some of its settings before saving them and outputting them back in the page, allowing high privilege users such as admin to set JavaScript payloads in them even when the unfiltered_html capability is disallowed, leading to an authenticated Stored Cross-Site Scripting issue
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 interaction from a victim user.
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Reaching this weakness in Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content < 3.1.8 takes any authenticated account. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.
Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content the fix is 3.1.8: builds < 3.1.8 are affected, anything from 3.1.8 onward is not.
Remediation
Update to version 3.1.8, 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. None of that substitutes for the fix: Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content 3.1.8 closes this, and updating the plugin is the step that ends it.
- Firewall
- 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-2021-34624: ProfilePress 3.0 - 3.1.3 Arbitrary File Upload
CVE-2021-34624 - 9.8CVE-2021-34622: ProfilePress 3.0 - 3.1.3 Privilege Escalation
CVE-2021-34622 - 9.8CVE-2021-34623: User Registration Privilege Escalation
CVE-2021-34623 - 9.8CVE-2021-34621: User Registration Privilege Escalation
CVE-2021-34621 - 8.8CVE-2026-13352: Paid Membership Plugin Limited Unsafe File Upload
CVE-2026-13352 - 8.1CVE-2026-3453: ProfilePress IDOR
CVE-2026-3453 - 7.3CVE-2026-19848: Paid Membership Plugin Arbitrary Shortcode Execution
CVE-2026-19848
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