CVE-2026-1565
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedThe User Frontend: AI Powered Frontend Posting, User Directory, Profile, Membership & User Registration plugin for WordPress is vulnerable to arbitrary file uploads due to incorrect file type validation in the 'WPUF_Admin_Settings::check_filetype_and_ext' function and in the 'Admin_Tools::check_filetype_and_ext' function in all versions up to, and including, 4.2.8. This makes it possible for authenticated attackers, with Author-level access and above, to upload arbitrary files on the affected site's server which may make remote code execution possible.
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceThe User Frontend WordPress plugin fails to properly validate file types in the WPUF_Admin_Settings::check_filetype_and_ext and Admin_Tools::check_filetype_and_ext functions, allowing authenticated users with Author-level access or higher to upload arbitrary files to the server, potentially leading to remote code execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Verify User Frontend plugin is installed and activeIn WordPress admin, go to Plugins > Installed Plugins and look for 'User Frontend' or 'WPUF' in the list. Check if it shows as 'Active'.Affected if The User Frontend plugin is installed and active, making the vulnerable code accessible.
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Determine the installed plugin versionIn the plugins list, click on 'View Details' for the User Frontend plugin, or check the plugin's main PHP file header for the 'Version' field.Affected if The installed version is lower than 4.2.9, indicating the vulnerable file type validation code is present.
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Confirm file upload functionality is enabledCheck the plugin settings: Navigate to User Frontend > Post Settings or similar upload configuration page. Look for any settings that enable or control file upload capabilities.Affected if File upload functionality is enabled, allowing the vulnerable WPUF_Admin_Settings::check_filetype_and_ext or Admin_Tools::check_filetype_and_ext functions to process uploads.
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Identify users with Author-level or higher accessIn WordPress admin, go to Users and review the role assignments. Users with Author, Editor, or Administrator roles can access the upload functionality.Affected if There are users with Author-level or higher roles who can access the vulnerable upload feature, enabling arbitrary file upload.
A user is affected if the User Frontend plugin is active with version lower than 4.2.9, file uploads are enabled, and users with Author-level or higher access exist in the environment.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
From vendor dataUpdate the plugin to version 4.2.9 or later where the file type validation has been fixed. If immediate update is not possible, consider restricting file upload capabilities or disabling the affected plugin until the patch can be applied.
- Consultation2.0 h
- Implementation1.0 h
- Testing3.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,936.
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Free · runs locallyCheck whether your project pulls in CVE-2026-1565 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2026-1565 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data