CVE-2026-48543— Krayin CRM 2.2.6 Stored Template Injection XSS via Web Form Description
Quick assessment
Affected
krayin laravel-crm
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.
Krayin CRM 2.2.6 及更早版本中存在一种存储型客户端模板注入漏洞，该漏洞允许经过身份验证的攻击者通过在网页表单描述字段中注入 Vue.js 模板表达式，在其他用户的浏览器中执行任意 JavaScript 代码。攻击者可构造包含双大括号模板语法的表单描述内容，使其被 Vue 模板编译器处理，从而实现原型链遍历以获取 Function 构造函数，并最终在应用程序上下文中为每一个查看受影响表单的用户执行攻击者提供的 JavaScript 代码。
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I. Basic Information for CVE-2026-48543
Vulnerability Information
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Vulnerability Title
Krayin CRM 2.2.6 Stored Template Injection XSS via Web Form Description
Source: CVE Program / CVE List V5
Vulnerability Description
Krayin CRM through 2.2.6 contains a stored client-side template injection vulnerability that allows authenticated attackers to execute arbitrary JavaScript in other users' browsers by injecting Vue.js template expressions into the web form description field. Attackers can craft a web form description containing double-brace template syntax that reaches the Vue template compiler, enabling prototype chain traversal to retrieve the Function constructor and execute attacker-supplied JavaScript in the application origin for every user who views the affected web form.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/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 |
|---|---|---|---|---|
| krayin | laravel-crm | 0 ~ 2.2.6 | - |
|
II. Public POCs for CVE-2026-48543
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-48543 (1)
Other References for CVE-2026-48543 (1)
Same Patch Batch · krayin · 2026-09-24 · 4 CVEs total
| CVE-2026-48542 | 5.4 MEDIUM | Krayin CRM 2.2.6 Stored Template Injection XSS via Product Name Field |
| CVE-2026-48541 | 5.4 MEDIUM | Krayin CRM 2.2.6 Stored Template Injection XSS via Contact Name Field |
| CVE-2026-48540 | 5.4 MEDIUM | Krayin CRM 2.2.6 Stored Template Injection XSS via Lead Title |
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Same weakness: CWE-79
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V. Comments for CVE-2026-48543
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