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CVE-2026-13424— Online Scheduling and Appointment Booking System <= 27.7 - Unauthenticated Stored Cross-Site Scripting via bookly_speed_up_update_addons AJAX action

Quick assessment

Affected
ladela Online Scheduling and Appointment Booking System – Bookly
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

WordPress Bookly是WordPress基金会开源的一款提供预约管理功能的CMS插件。 WordPress Bookly 27.7及之前版本存在跨站脚本漏洞，该漏洞源于bookly_speed_up_update_addons AJAX操作输入清理和输出转义不足，可能导致未经身份验证的攻击者注入任意Web脚本，当管理员查看Diagnostics → Logs页面时执行。

CVSS 7.2 · High EPSS 0.58% · P46

Affected Version Matrix 1

VendorProduct Version RangeStatus
ladela Online Scheduling and Appointment Booking System – Bookly ≤ 27.7 affected
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I. Basic Information for CVE-2026-13424

Vulnerability Information
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Vulnerability Title
Online Scheduling and Appointment Booking System <= 27.7 - Unauthenticated Stored Cross-Site Scripting via bookly_speed_up_update_addons AJAX action
Source: CVE Program / CVE List V5
Vulnerability Description
The Online Scheduling and Appointment Booking System – Bookly plugin for WordPress is vulnerable to Stored Cross-Site Scripting via bookly_speed_up_update_addons AJAX action in all versions up to, and including, 27.7 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. The injection point is the bookly_speed_up_update_addons AJAX action, which is registered as wp_ajax_nopriv_* and therefore reachable without authentication; the payload is stored verbatim in the bookly_log.details column when a request is submitted without a valid signature, and executes when an administrator later views the Diagnostics → Logs page.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
WordPress Bookly 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress Bookly是WordPress基金会开源的一款提供预约管理功能的CMS插件。 WordPress Bookly 27.7及之前版本存在跨站脚本漏洞，该漏洞源于bookly_speed_up_update_addons AJAX操作输入清理和输出转义不足，可能导致未经身份验证的攻击者注入任意Web脚本，当管理员查看Diagnostics → Logs页面时执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
ladela Online Scheduling and Appointment Booking System – Bookly 0 ~ 27.7 -

II. Public POCs for CVE-2026-13424

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III. Intelligence Information for CVE-2026-13424

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Patches & Fixes for CVE-2026-13424 (6)

Vendor Advisories for CVE-2026-13424 (1)

Vendor Pages for CVE-2026-13424 (1)

IV. Related Vulnerabilities

Same product: Online Scheduling and Appointment Booking System – Bookly
Same vendor: ladela
Same weakness: CWE-79

V. Comments for CVE-2026-13424

Anonymous User
2026-09-25 10:32:32

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Anonymous User
2026-09-25 10:32:33

test'

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