CVE-2026-76586

Appointment Booking Calendar Plugin and Scheduling Plugin – BookingPress 1.5.6 - 1.6.2 - Unauthenticated Booking Price Manipulation

2026-08-29 00:00

Strategic Overview

Status: Patched in 1.6.3
Affected Plugin: Appointment Booking Calendar Plugin and Scheduling Plugin – BookingPress
Affected Version: 1.5.6 – 1.6.2
CVSS: 7.3High
Weakness type: CWE-602 · Client-Side Enforcement of Server-Side Security
CVE: CVE-2026-76586

View all Appointment Booking Calendar Plugin and Scheduling Plugin – BookingPress vulnerabilities

At a glance

CVE-2026-76586 is a high-severity Client-Side Enforcement of Server-Side Security vulnerability in the Appointment Booking Calendar Plugin and Scheduling Plugin WordPress plugin, affecting versions 1.5.6 – 1.6.2. It carries a CVSS score of 7.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 1.6.3; sites on affected versions should update now. Disclosed August 2026, reported by Nguyen Phuoc Thinh.

Vulnerability Overview

The Appointment Booking Calendar Plugin and Scheduling Plugin – BookingPress plugin for WordPress is vulnerable to Price Manipulation in versions 1.5.6 to 1.6.2. This makes it possible for unauthenticated attackers to manipulate booking prices.

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-602: Client-Side Enforcement of Server-Side Security

The product is composed of a server that relies on the client to implement a mechanism that is intended to protect the server.

Remediation

Update to version 1.6.3, 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: Appointment Booking Calendar Plugin and Scheduling Plugin 1.6.3 closes this, and updating the plugin is the step that ends it.

Login Security
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-76586 https://www.wordfence.com/threat-intel/vulnerabilities/id/8d8c602f-3ab2-4ccd-8d3c-cfb9d4be540d https://nvd.nist.gov/vuln/detail/CVE-2026-76586

Related records

Other vulnerabilities in Appointment Booking Calendar Plugin and Scheduling Plugin – BookingPress

CVSS Vector

7.3

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged
ConfidentialityLow
IntegrityLow
AvailabilityLow

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