CVE-2026-6449

Booking for Appointments and Events Calendar – Amelia <= 2.2.1 - Unauthenticated Authorization Bypass via Remote Approval Endpoint

2026-05-01 19:17
awhacken

Strategic Overview

Status
Patched in 2.3
Affected Plugin
Booking for Appointments and Events Calendar – Amelia
Affected Version
<= 2.2.1
CVSS
5.3Medium
Weakness type
CWE-285 · Improper Authorization
CVE
CVE-2026-6449
View all Booking for Appointments and Events Calendar – Amelia vulnerabilities

At a glance

CVE-2026-6449 is a medium-severity Improper Authorization vulnerability in the Booking for Appointments and Events Calendar WordPress plugin, affecting versions <= 2.2.1. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 2.3; sites on affected versions should update now. Disclosed May 2026, reported by awhacken.

Vulnerability Overview

The Booking for Appointments and Events Calendar – Amelia plugin for WordPress is vulnerable to Improper Authorization in all versions up to, and including, 2.2.1. This is due to a logical short-circuit flaw in authorization logic that causes token validation to be entirely skipped when a booking has a 'waiting' status. This makes it possible for unauthenticated attackers to approve any booking that is in 'waiting' status by sending a crafted request to the publicly-accessible admin-ajax endpoint.

Technical Analysis

The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.

CWE-285: Improper Authorization

Booking for Appointments and Events Calendar <= 2.2.1 carries this weakness at waiting, and reaching it takes no account at all. Improper authorization means a permission check exists but does not cover the case being exercised, so a caller who is allowed to do one thing is allowed to do a neighbouring thing as well.

A lower-privileged account performs an action reserved for a higher one, which on a multi-author or membership site means an ordinary user reaching administrative behaviour. For Booking for Appointments and Events Calendar the fix is 2.3: builds <= 2.2.1 are affected, anything from 2.3 onward is not.

Remediation

Update to version 2.3, or a newer patched version

How does WordSec protect against this?

This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: Booking for Appointments and Events Calendar 2.3 closes this, and updating the plugin is the step that ends it.

  • Login Security
  • Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-6449https://www.wordfence.com/threat-intel/vulnerabilities/id/8d7cc468-eeba-497f-9e11-79d4bebdd7a2https://nvd.nist.gov/vuln/detail/CVE-2026-6449

Related records

Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C