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Bookly CVE-2026-32540

| EUVDEUVD-2026-15915 HIGH
Cross-site Scripting (XSS) (CWE-79)
2026-03-25 Patchstack GHSA-9vgf-wj9v-g7gw
7.1
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
7.1 HIGH
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

4
Re-analysis Queued
Apr 24, 2026 - 16:37 vuln.today
cvss_changed
EUVD ID Assigned
Mar 25, 2026 - 16:47 euvd
EUVD-2026-15915
Analysis Generated
Mar 25, 2026 - 16:47 vuln.today
CVE Published
Mar 25, 2026 - 16:15 nvd
HIGH 7.1

DescriptionCVE.org

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') vulnerability in Bookly Bookly bookly-responsive-appointment-booking-tool allows Reflected XSS.This issue affects Bookly: from n/a through <= 26.7.

AnalysisAI

A Reflected Cross-Site Scripting (XSS) vulnerability exists in Bookly, a WordPress appointment booking plugin, affecting versions up to and including 26.7. Attackers can inject malicious scripts into web requests that execute in the victim's browser when the vulnerable page is rendered, allowing session hijacking, credential theft, or malware distribution. While no CVSS score or EPSS data is currently available, the vulnerability has been formally tracked by ENISA (EUVD-2026-15915) and reported via Patchstack, indicating active awareness in the security community.

Technical ContextAI

The vulnerability stems from improper neutralization of user-supplied input during web page generation, classified under CWE-79 (Improper Neutralization of Input During Web Page Generation). Bookly is a WordPress plugin (CPE: cpe:2.3:a:bookly:bookly:*:*:*:*:*:*:*:*) that handles appointment booking functionality and likely processes user input through query parameters or form data without adequate HTML entity encoding or Content Security Policy protections. Reflected XSS occurs when untrusted input is echoed back in the HTTP response without sanitization, allowing attackers to craft malicious URLs that bypass same-origin restrictions and execute arbitrary JavaScript in the victim's security context.

RemediationAI

Upgrade Bookly to a version newer than 26.7 immediately. Check the official Bookly plugin repository or vendor advisory at https://patchstack.com/database/Wordpress/Plugin/bookly-responsive-appointment-booking-tool/ for the patched release. Until a patch is deployed, implement defensive measures including: enable WordPress security plugins that provide input validation and output encoding, enforce Content Security Policy (CSP) headers to restrict script execution, apply Web Application Firewall (WAF) rules to detect and block XSS payloads in query parameters, and educate users not to click suspicious links referencing your Bookly booking pages. Consider temporarily disabling Bookly if it is not critical to business operations pending patch availability.

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CVE-2026-32540 vulnerability details – vuln.today

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