Improper Input Validation in LatePoint Calendar Booking Plugin by WordPress
CVE-2026-5356

7.5HIGH

Key Information:

Vendor

WordPress
Status
Latepoint – Calendar Booking Plugin For Appointments And Events
Vendor
CVE Published:
8 July 2026

What is CVE-2026-5356?

The LatePoint Calendar Booking Plugin for Appointments and Events for WordPress is susceptible to an Improper Input Validation flaw. This vulnerability arises from the plugin's Stripe Connect payment processor in all versions up to and including 5.4.0, which allows unauthenticated attackers to manipulate a client-supplied PaymentIntent ID. By exploiting this flaw, attackers can execute unauthorized transactions and pay arbitrary amounts by submitting previously successful PaymentIntent tokens, thereby posing a significant risk to users and transactions.

Affected Version(s)

LatePoint – Calendar Booking Plugin for Appointments and Events 0 <= 5.4.0

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/changeset/3509569/late...

CVSS V3.1

Score:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Andrés Cruciani
.