CVE-2026-110653
CriticalCVSS 9.1Summary
The LatePoint plugin for WordPress in versions up to and including 5.7.4 is vulnerable to Authentication Bypass via Race Condition in the verifyOTP function. The OTP attempts counter is updated non-atomically without a WHERE attempts < 10 guard and without a row lock, creating a TOCTOU window that lets concurrent requests bypass the 10-attempt lockout.
Risk Assessment
An unauthenticated attacker who knows a customer's email or phone number can brute-force the 6-digit OTP code and take over their account, bookings, and personal data.
Recommendation
Update the LatePoint plugin to a version newer than 5.7.4; until then, consider restricting access to the auth__verify_otp endpoint or adding an additional rate limit at the web server level.
Other vulnerabilities in LatePoint
See all- CVE-2026-5356High
The LatePoint plugin for WordPress up to version 5.4.0 has an improper input validation vulnerability in the Stripe Connect payment processor. This allows unauthenticated attackers to pay arbitrary amounts by supplying a previously successful PaymentIntent token.
- CVE-2026-57714Critical
The LatePoint plugin for WordPress contains a Blind SQL Injection vulnerability due to improper neutralization of special elements in SQL commands. This issue affects versions up to and including 5.6.3.
- CVE-2026-103366High
The Appointment Booking Plugin – LatePoint 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 public `steps__reload_booking_form_summary_panel` and `steps__start` routes. The lack of ownership checks allows unauthenticated attackers to enumerate booking and cart identifiers and read other customers' appointment details and pending checkout contents directly from JSON responses.
- CVE-2026-100163High
The Appointment Booking Plugin – LatePoint for WordPress is vulnerable to Authentication Bypass in versions up to and including 5.7.2 via the OsCustomerHelper::create_wp_user_for_customer() helper reached from the public process_step_customer() booking step. When the 'Use WordPress users as customers' option is enabled, the helper matches a WordPress user by user_login equal to the victim's email even if their user_email differs, and links that user's ID into the victim's LatePoint customer row. This allows authenticated attackers with Subscriber-level access to take over another customer's LatePoint account.
- CVE-2026-104766High
The LatePoint plugin for WordPress up to version 5.7.3 is vulnerable to privilege escalation. The lack of an allowlist for setting names/values and missing role validation for the 'default_wp_role_for_customer' setting allows authenticated attackers with 'settings__edit' capability (e.g., agents) to overwrite the default WordPress role to 'administrator', causing new customer accounts to be created with full admin privileges.
- CVE-2026-17538Medium
The LatePoint plugin for WordPress up to version 5.6.9 is vulnerable to Insecure Direct Object Reference. The process_step_customer() function uses only is_user_logged_in() as a gate before merging POSTed customer data into an existing LatePoint customer, without ownership checks. This allows authenticated attackers with Subscriber-level access or above to modify personal information of arbitrary LatePoint customers, and when contact_merge is 'phone', overwrite the victim's email and take over the account via password reset.
- CVE-2026-13471Medium
The LatePoint – Calendar Booking Plugin for Appointments and Events plugin for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to and including 5.6.3 via the LatePointAbilityDeleteBooking::execute due to missing validation on a user controlled key. Attackers with LatePoint Agent-level access or above can read bookings and customer PII (full name, email, phone, and notes) assigned to other agents, and delete arbitrary bookings. This vulnerability is only exploitable when an administrator has enabled the Abilities API toggles.
- CVE-2026-18441Medium
The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress is vulnerable to Insecure Direct Object Reference in all versions up to and including 5.6.9 via the set_customer_object due to missing validation on a user controlled key. This allows unauthenticated attackers to enumerate arbitrary customer records and disclose personally identifiable information - including first name, last name, email address, and phone number - by iterating the customer[id] parameter. This issue is exploitable only when the site is configured with customer authentication disabled (guest checkout enabled).
- CVE-2026-5391Medium
The LatePoint plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'btn_wrapper_classes' attribute of the 'latepoint_resources' shortcode in all versions up to, and including, 5.3.2. This is due to insufficient input sanitization and output escaping in the 'locations' branch of the 'shortcode_latepoint_resources' function. This makes it possible for authenticated attackers, with contributor level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
- CVE-2026-11398Medium
The LatePoint plugin for WordPress up to version 5.6.1 is vulnerable to authorization bypass. Unauthenticated attackers can modify personally identifiable information (first name, last name, phone number, and notes) of any existing customer record, including administrator accounts, by submitting the booking form with a known email address. Exploitation requires guest bookings to be enabled.
Original NVD description (English source)
The Appointment Booking Plugin – LatePoint | Calendar & Scheduling for WordPress plugin for WordPress is vulnerable to Authentication Bypass via Race Condition in all versions up to, and including, 5.7.4. This is due to a non-atomic read-modify-write on the OTP verification attempts counter in the `verifyOTP` function: the counter is incremented using a stale in-memory value with no conditional `WHERE attempts < 10` guard on the `UPDATE` and no `SELECT ... FOR UPDATE` row lock, creating a TOCTOU window that allows concurrent requests to bypass the 10-attempt lockout. This makes it possible for unauthenticated attackers — who know a target customer's registered email address or phone number — to fire concurrent requests to the `auth__verify_otp` endpoint, defeat the lockout cap, brute-force the 6-digit OTP code, and authenticate as the targeted LatePoint customer, gaining full access to their account, bookings, and personal data. The nonce check present on the endpoint (`otp_verify_otp_nonce`) does not mitigate this issue, as the nonce is publicly emitted by the unauthenticated `request_otp` and `resend_otp` endpoints and is trivially obtainable by any unauthenticated attacker prior to launching the race.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS