CVE-2025-13660
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 Guest Support plugin for WordPress is vulnerable to User Email Disclosure in versions up to, and including, 1.2.3. This is due to the plugin exposing a public AJAX endpoint that allows anyone to search for and retrieve user email addresses without any authentication or capability checks. This makes it possible for unauthenticated attackers to enumerate user accounts and extract email addresses via the guest_support_handler=ajax endpoint with the request=get_users parameter.
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 Guest Support WordPress plugin exposes a public AJAX endpoint (guest_support_handler=ajax) that lacks authentication and capability checks. Unauthenticated attackers can exploit this by sending requests with the get_users parameter to enumerate user accounts and extract email addresses.
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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
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 Guest Support plugin is installedIn WordPress admin, go to Plugins > Installed Plugins and look for 'Guest Support' or check the wp-content/plugins directory for a guest-support folderAffected if The plugin is installed and active
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Check the installed plugin versionIn WordPress admin, click on the Guest Support plugin to view its details, or inspect the main plugin PHP file for the 'Version' header comment in the plugin metadataAffected if The version cannot be determined to be patched or the installed version lacks the fix (compare to any available patched version)
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Confirm the plugin is activeIn WordPress admin > Plugins, verify the Guest Support plugin shows as 'Active'Affected if The plugin is active and serving requests
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Test the vulnerable AJAX endpoint accessibilitySend a GET or POST request to yoursite.com/wp-admin/admin-ajax.php with parameters action=guest_support_handler and guest_support_handler=ajax, then add get_users=1 to the request. No authentication should be required.Affected if The endpoint responds and returns user data (including email addresses) without requiring login or nonce verification
A user is affected if the Guest Support plugin is active and its AJAX endpoint at admin-ajax.php accepts unauthenticated requests with the get_users parameter, returning user email addresses.
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 dataAdd proper authentication and capability checks (e.g., current_user_can() and nonce verification) to the AJAX endpoint, or restrict the endpoint to authenticated users only. If a patched version is available, update the plugin.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-13660 — 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-2025-13660 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