CVE-2026-32540

Online Scheduling and Appointment Booking System – Bookly <= 26.7 - Reflected Cross-Site Scripting

2026-03-20 00:00

Strategic Overview

Status: Patched in 26.8
Affected Plugin: Online Scheduling and Appointment Booking System – Bookly
Affected Version: <= 26.7
CVSS: 6.1Medium
Weakness type: CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVE: CVE-2026-32540

View all Online Scheduling and Appointment Booking System – Bookly vulnerabilities

At a glance

CVE-2026-32540 is a medium-severity Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in the Online Scheduling and Appointment Booking System WordPress plugin, affecting versions <= 26.7. It carries a CVSS score of 6.1 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 26.8; sites on affected versions should update now. Disclosed March 2026, reported by ickogz.

Vulnerability Overview

The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Reflected Cross-Site Scripting in versions up to, and including, 26.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.

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.

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Reaching this weakness in Online Scheduling and Appointment Booking System <= 26.7 takes a caller who can reach the endpoint. Cross-site scripting happens when input from a request is written into a page without being escaped for the context it lands in, so the browser parses attacker-supplied text as markup or script.

Injected script runs with the privileges of whoever views the affected page, which is how these flaws turn into administrator session theft, silent account creation or persistent backdoors in page content. For Online Scheduling and Appointment Booking System the fix is 26.8: builds <= 26.7 are affected, anything from 26.8 onward is not.

Remediation

Update to version 26.8, or a newer patched version

How does WordSec protect against this?

The attempt arrives as an ordinary request to Online Scheduling and Appointment Booking System: WordSec's web application firewall inspects request payloads before WordPress loads them. None of that substitutes for the fix: Online Scheduling and Appointment Booking System 26.8 closes this, and updating the plugin is the step that ends it.

Firewall
Alerts

External References

https://www.cve.org/CVERecord?id=CVE-2026-32540 https://www.wordfence.com/threat-intel/vulnerabilities/id/3b59bf60-eadd-4942-a310-9d9f108820f0 https://nvd.nist.gov/vuln/detail/CVE-2026-32540

Related records

Same weakness class

Other vulnerabilities in Online Scheduling and Appointment Booking System – Bookly

CVSS Vector

6.1

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredNone
User InteractionRequired
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone

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