Appointment Booking Plugin <= 5.7.3 — Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'booking[id]' and 'cart[id]' Parameters
CVE-2026-103366Published · Updated Action summary
Affected: ≤5.7.3Update to 5.7.4 or newer
All remediation steps- Severity
- High7.5
- CVSS
- 7.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:HConfidentiality- High
I:NIntegrity- None
A:NAvailability- None
- Required access
- No account needed
- Exploit prediction (EPSS)
- 0.5% chance in 30 days41th percentile
- CISA KEV
- Not listed
On this page8
Am I affected?
Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress latepoint
- Affected≤ 5.7.3
- Patched in5.7.4
Update to 5.7.4 or newer.
You are affected if you run ≤ 5.7.3. Version 5.7.4 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 5.7.4, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to churchill11.
The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Insecure Direct Object Reference in versions up to, and including, 5.7.3 via the `booking[id]` and `cart[id]` parameters on the `steps__reload_booking_form_summary_panel` and `steps__start` public routes (reachable through wp_ajax_nopriv_latepoint_route_call). This is due to `OsStepsHelper::set_required_objects()` feeding raw request parameters into `set_booking_object()` and `set_cart_object()`, which call `OsModel::set_data()` and load an arbitrary booking or cart row by primary key with no ownership check — the ownership guard the vendor added for the earlier disclosure lives only inside `OsStepsHelper::load_step()` and does not cover the sibling routes or `cart[id]` at all. This makes it possible for unauthenticated attackers to enumerate sequential booking / cart identifiers and read other customers' appointment details (service name, agent, date/time, duration, price breakdown, status) and other shoppers' pending checkout contents directly from the JSON responses.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress
All 59| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Critical9.1 | Unauthenticated Authentication Bypass via Account Takeover via 'IS NOT NULL' Sentinel in 'password_reset_token' Parameter ≤5.7.6Update to 5.7.7 | CVE-2026-118066 | |
| Medium5.4 | Unauthenticated Stored Cross-Site Scripting via Customer Email Field ≤5.7.6Update to 5.7.7 | CVE-2026-119152 | |
| Medium4.4 | Authenticated (Administrator+) Stored Cross-Site Scripting ≤5.7.5Update to 5.7.6 | CVE-2026-105258 | |
| Medium5.3 | Unauthenticated Payment Bypass ≤5.7.4Update to 5.7.5 | CVE-2026-105256 | |
| Medium4.3 | Authenticated (Agent+) Insecure Direct Object Reference ≤5.7.4Update to 5.7.5 | CVE-2026-105257 |
- Critical9.1Unauthenticated Authentication Bypass via Account Takeover via 'IS NOT NULL' Sentinel in 'password_reset_token' Parameter
≤5.7.6Update to 5.7.7
- Medium5.4Unauthenticated Stored Cross-Site Scripting via Customer Email Field
≤5.7.6Update to 5.7.7
- Medium4.4Authenticated (Administrator+) Stored Cross-Site Scripting
≤5.7.5Update to 5.7.6
- Medium5.3Unauthenticated Payment Bypass
≤5.7.4Update to 5.7.5
- Medium4.3Authenticated (Agent+) Insecure Direct Object Reference
≤5.7.4Update to 5.7.5
Timeline
CVE published
Severity high, CVSS 7.5
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- EPSS
- Exploit Prediction Scoring System by FIRST.org.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.