Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-6286— Booking for Appointments and Events Calendar <= 2.2 - Unauthenticated Stored Cross-Site Scripting via Customer Name Fields in Booking Submission

Quick assessment

Affected
melograno Booking for Appointments and Events Calendar – Amelia
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 插件“预约与活动日历 – Amelia”在 2.2 版本及更早版本中，通过客户姓名字段存在存储型跨站脚本（Stored XSS）漏洞。其成因在于认证绕过：AddBookingCommand 显式跳过了 nonce 校验（见 Command.php 第 186 行），使得未认证用户也能提交预约数据。虽然插件对客户 firstName 和 lastName 字段应用了 sanitize_text_field()（见 BookingApplicationService.php 第 302-308 行）

CVSS 7.2 · High

Possible ATT&CK Techniques 1 AI

T1189 · Drive-by Compromise
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-6286

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Booking for Appointments and Events Calendar <= 2.2 - Unauthenticated Stored Cross-Site Scripting via Customer Name Fields in Booking Submission
Source: CVE Program / CVE List V5
Vulnerability Description
The Booking for Appointments and Events Calendar – Amelia plugin for WordPress is vulnerable to Stored Cross-Site Scripting via customer name fields in versions up to and including 2.2. This is due to an authentication bypass where the AddBookingCommand explicitly skips nonce verification (Command.php line 186), allowing unauthenticated users to submit booking data. While the plugin applies sanitize_text_field() to customer firstName and lastName fields (BookingApplicationService.php lines 302-308), this function only removes HTML tags and preserves special characters including double quotes. The vulnerability manifests in the administrative Calendar view where a FullCalendar eventContent callback interpolates customer names directly into JavaScript template literals (redesign/dist/index.js line 199) and renders them via innerHTML without proper HTML entity encoding. Because double quotes are preserved, an attacker can inject payloads like '" onmouseover="alert(document.cookie)"' to break out of the title attribute and inject malicious event handlers. This makes it possible for unauthenticated attackers to inject arbitrary web scripts that will execute when an administrator accesses the Calendar page and hovers over the malicious appointment.
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

Affected Products

Vendor Product Affected Versions CPE Subscribe
melograno Booking for Appointments and Events Calendar – Amelia 0 ~ 2.2 -

II. Public POCs for CVE-2026-6286

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-6286

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-6286 (2)

Vendor Advisories for CVE-2026-6286 (1)

Vendor Pages for CVE-2026-6286 (4)

Other References for CVE-2026-6286 (1)

IV. Related Vulnerabilities

Same product: Booking for Appointments and Events Calendar – Amelia
Same vendor: melograno
Same weakness: CWE-79

V. Comments for CVE-2026-6286

No comments yet

Leave a comment