CVE-2026-76586 | BDVDB-2026-366246 Detail

Appointment Booking Calendar Plugin and Scheduling Plugin

Description#

The Appointment Booking Calendar Plugin and Scheduling Plugin WordPress plugin before 1.6.3 does not verify the amount actually paid against the server-side price staged for a booking when confirming an online payment, allowing unauthenticated users to have a paid appointment approved for a fraction of its price.

Impact#

Per CVSS v3.1: confidentiality impact none, integrity impact high, availability impact none. Attack vector: network.

Weaknesses#

CWE-284 Improper Access Control

References#

https://wpscan.com/vulnerability/bc74bc9b-92ce-434e-a21d-34d7525c8600/

Exploit#

https://wpscan.com/vulnerability/bc74bc9b-92ce-434e-a21d-34d7525c8600/

History#

Version 12026-08-29Record published in the CVE List.
Version 22026-08-30Most recent update recorded in the CVE List.

Published

Published: 2026-08-29
Last modified: 2026-08-30

Vendor information

Vendor: Not stated
Product: Appointment Booking Calendar Plugin and Scheduling Plugin

Score

7.5 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 29.7.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Improper Access Control

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
>= 1.5.6 and < 1.6.3
Fixed
1.6.3

Scoring System

CVSS v4.0

Not available

CVSS v3.1

7.5 High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Metric breakdown
Attack Vector	Network
Attack Complexity	Low
Privileges Required	None
User Interaction	None
Scope	Unchanged
Confidentiality	None
Integrity	High
Availability	None

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).