Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content <= 4.16.18 - Authenticated (Author+) Limited Unsafe File Upload via upload_mimes Filter Expansion
The Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress plugin for WordPress is vulnerable to Arbitrary File Upload in all versions up to, and including, 4.16.18 via the allowed_mime_types function. This is due to the unconditional registration of an upload_mimes filter that adds executable file extensions (.exe, .apk, .msi) to the global WordPress MIME allowlist, without scoping the expansion to digital-product upload contexts. This makes it possible for authenticated attackers, with author-level access and above, to upload files that may be executable, which makes remote code execution possible. This filter is registered globally on every request regardless of whether the digital products feature is configured or in use, meaning the expanded MIME allowlist affects all WordPress upload contexts site-wide.
Browse WordPress security risksQuick answer
Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress should be reviewed and updated if it matches the affected versions. The recommended fix is to apply the vendor-supported patched version or the mitigation steps below, then retest the public website with Fixnx.
Who is affected
Affected versions
- up to and including 4.16.18
Fixed versions
- 4.16.19
How to fix it
Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress is affected by CVE-2026-13352, an unsafe file upload flaw that expands the WordPress MIME allowlist. An author can upload executable file types that may support code execution or a later attack. Update Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress to 4.16.19 or a newer vendor-supported patched release. Prioritize internet-facing and shared production systems first.
- Inventory every Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress deployment, version, exposed endpoint, environment, and owner.
- Confirm the installed release is not an affected version up to and including 4.16.18.
- Update Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress to 4.16.19 or a newer vendor-supported patched release.
- Until the update is complete, disable ProfilePress or non-admin uploads and deny .exe, .apk, and .msi files at the web and storage layers.
- Review relevant logs and search uploads for dangerous extensions, MIME mismatches, unexpected author uploads, web shells, and unusual outbound traffic.
- Quarantine unsafe files, scan the webroot and running processes, remove persistence, and rotate secrets if uploaded content may have executed.
- Clear WordPress, object, page, CDN, and browser caches, then update the asset inventory and close any temporary controls only after validation.
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Verify the fix
- Confirm Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress is on the patched version or mitigation stated above and record the exact deployed version.
- Confirm author-level users can no longer upload the executable file types added by the vulnerable global MIME filter.
- Confirm the affected WordPress REST, AJAX, form, shortcode, upload, export, or admin feature is available only to the roles and requests that need it.
- Review logs after remediation for continued exploit attempts or signs that the issue was used before the fix.
- Rerun the relevant dependency, platform, vendor, or Fixnx security check and document the result, affected assets, change record, and cleanup evidence for CVE-2026-13352.
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Trusted references
FAQ
What is affected by CVE-2026-13352?
Paid Membership Plugin, Ecommerce, User Registration Form, Login Form, User Profile & Restrict Content – ProfilePress versions listed as affected should be reviewed: up to and including 4.16.18.
What should I fix first?
Start with internet-facing sites, admin panels, login flows, plugins, themes, modules, packages, and systems that process user-controlled input or sensitive data.
How do I confirm the fix worked?
Apply the patched version or mitigation, clear caches where relevant, retest the affected workflow, and run a new Fixnx scan to verify public website exposure signals.
How are Fixnx security risk categories chosen?
Fixnx keeps one canonical risk page and assigns only broad, relevant categories such as ecosystem, technology area, or vulnerability class.