Medium severity · published Sep 17, 2026
CVE-2026-16582
Booking for Appointments and Events Calendar - Amelia <= 2.4.5 - Missing Authorization to Unauthenticated Payment Bypass
5.3
CVSS
0.3%
EPSS
No
On KEV
Description
The Booking for Appointments and Events Calendar – Amelia plugin for WordPress is vulnerable to unauthorized modification of data in all versions up to, and including, 2.4.5. This is due to the plugin accepting a client-supplied package-redemption identifier as proof of payment without validating it. This makes it possible for unauthenticated attackers to create approved appointment bookings without completing payment
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 24% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
BF
Booking for Appointments and Events Calendar – Amelia · melograno
through 2.4.5 · source: vendor
Affected product
BF
Booking for Appointments and Events Calendar – Amelia
melograno
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-16582
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-16582
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3640186
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/9e0c6f83-f4ca-4891-b2db-e2ac49d96ee5?source=cve
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