CVE-2026-48540— Krayin CRM 2.2.6 Stored Template Injection XSS via Lead Title
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 及之前版本存在一个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“线索标题”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。攻击者可以构造包含双花括号模板语法的线索标题，该内容会被传入 Vue 模板编译器，从而能够进行原型链遍历以获取 Function 构造函数，并在应用程序的上下文中为每个查看受影响的线索记录的用户执行攻击者提供的 JavaScript 代码。
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I. Basic Information for CVE-2026-48540
Vulnerability Information
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Vulnerability Title
Krayin CRM 2.2.6 Stored Template Injection XSS via Lead Title
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 lead title field. Attackers can craft a lead title 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 lead record.
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-2026-48540
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-48540 (1)
Other References for CVE-2026-48540 (1)
Same Patch Batch · krayin · 2026-09-24 · 4 CVEs total
| CVE-2026-48543 | 5.4 MEDIUM | Krayin CRM 2.2.6 Stored Template Injection XSS via Web Form Description |
| 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 |
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Same weakness: CWE-79
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V. Comments for CVE-2026-48540
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