CVE-2026-15984— QuickCal <= 1.0.20 - Unauthenticated Stored Cross-Site Scripting via Custom Field Parameters
Quick assessment
Affected
Themovation QuickCal
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.
以下是对该漏洞描述的中文翻译： WordPress 的 QuickCal 插件存在存储型跨站脚本（Stored Cross-Site Scripting）漏洞。 漏洞详情： 受影响版本：所有 1.0.20 及之前版本。 根本原因：由于自定义字段参数缺乏足够的输入净化和输出转义，攻击者可以在页面中注入任意 Web 脚本。当用户访问被注入的页面时，这些脚本将会被执行。 非认证攻击向量：保护“未认证预约添加（booked_add_appt）”AJAX 操作的 nonce 值公开嵌入在渲染预订日历短代码的任意页面上。这意味
Possible ATT&CK Techniques 1 AI
T1189 · Drive-by Compromise
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I. Basic Information for CVE-2026-15984
Vulnerability Information
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Vulnerability Title
QuickCal <= 1.0.20 - Unauthenticated Stored Cross-Site Scripting via Custom Field Parameters
Source: CVE Program / CVE List V5
Vulnerability Description
The QuickCal plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Custom Field Parameters in all versions up to, and including, 1.0.20 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 nonce guarding the unauthenticated booked_add_appt AJAX action is publicly embedded on any page rendering the booking calendar shortcode, making it trivially obtainable by unauthenticated attackers without any prior account or privilege.
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 |
|---|---|---|---|---|
| Themovation | QuickCal | 0 ~ 1.0.20 | - |
|
II. Public POCs for CVE-2026-15984
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-15984 (2)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-15984
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