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VulnerabilityPublished

CVE-2026-87966: Easy Appointments (WordPress plugin) · Insecure Direct Object Reference

Affects Easy Appointments (WordPress plugin)Source CVE Database V5

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Not known to be exploited · CVSS 5.3 Medium : upgrade to 4.0.2.2 when convenient.

Data as of 2 Nov 2026, 22:58 UTC

CVSS 3.1 base score
5.3Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 4.0.2.2
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

What to do

Upgrade Easy Appointments (WordPress plugin) to 4.0.2.2.

Affected software

ProductAffectedFixed in
Easy AppointmentsAffected
  • >=4.0 <4.0.2.2
Fixed in
  • 4.0.2.2

AI-suggested

Upgrade the Easy Appointments plugin to version 4.0.2.2 or later, where this authorization bypass vulnerability has been fixed. No other mitigation steps are indicated.

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.

References

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