Vulnerability · Published Sep 18, 2026 · Assigned by WPScan

CVE-2026-87966Easy Appointments 4.0 - 4.0.2.1 - Unauthenticated Arbitrary Appointment Modification and Deletion via IDOR

Medium 5.3

In plain English

A medium-severity authorization bypass via user-controlled key in Easy Appointments from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 23% of all known vulnerabilities).

Severity (CVSS 3.1)5.3Medium

Exploit odds (30 days)0.3%top 76.8% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

The Easy Appointments WordPress plugin before 4.0.2.2 does not perform an ownership or authorization check on its unauthenticated appointment-reservation endpoint before updating an existing appointment identified by a request-supplied id, allowing unauthenticated attackers to overwrite, and through a follow-on cleanup delete, arbitrary appointments.

Affected products (as reported)

Vendor	Product	Versions
Unknown	Easy Appointments	4.0 – before 4.0.2.2

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References

https://wpscan.com/vulnerability/e2e625f4-c146-4622-b439-3179c4484613/ exploit, vdb-entry, technical-description