Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content <= 4.17.4 - Reflected Cross-Site Scripting via ppress_billing_address Filename Parameter
Strategic Overview
- Status
- Patched in 4.17.5
- Affected Plugin
- Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress
- Affected Version
<= 4.17.4- CVSS
- 6.1Medium
- Weakness type
- CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
- CVE
CVE-2026-92551
At a glance
CVE-2026-92551 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 <= 4.17.4. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.17.5; sites on affected versions should update now. Disclosed October 2026, reported by UKO.
Vulnerability Overview
The Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress plugin for WordPress is vulnerable to Reflected Cross-Site Scripting via ppress_billing_address Filename Parameter in all versions up to, and including, 4.17.4 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. The vulnerability is exploitable via any page hosting the ProfilePress Tabbed Widget by supplying a malicious filename for the ppress_billing_address file upload field in a crafted POST request.
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.
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 <= 4.17.4 takes a caller who can reach the endpoint. 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 4.17.5: builds <= 4.17.4 are affected, anything from 4.17.5 onward is not.
Remediation
Update to version 4.17.5, 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 4.17.5 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-2026-92536: Paid Membership Plugin Info Exposure
CVE-2026-92536 - 8.8CVE-2026-13352: Paid Membership Plugin Limited Unsafe File Upload
CVE-2026-13352 - 8.1CVE-2026-85658: Paid Membership Plugin Arbitrary Shortcode Execution
CVE-2026-85658
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