CVE-2026-42840— ERPNext 16.16.0 - Stored XSS in POS customer section via unescaped template literals
Quick assessment
Affected
Frappe ERPNext
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.
ERPNext是印度ERPNext公司的一套开源的企业资源计划解决方案。 ERPNext 16.16.0版本存在安全漏洞，该漏洞源于经过身份验证的用户可在客户记录的电子邮件或手机字段中持久化任意HTML/JavaScript，并在销售点界面中触发未转义渲染。
Possible ATT&CK Techniques 1 AI
T1059 · Command and Scripting Interpreter
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I. Basic Information for CVE-2026-42840
Vulnerability Information
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Vulnerability Title
ERPNext 16.16.0 - Stored XSS in POS customer section via unescaped template literals
Source: CVE Program / CVE List V5
Vulnerability Description
An authenticated user can persist arbitrary HTML/JavaScript in the email_id or mobile_no fields of a Customer record and trigger unescaped rendering in the Point of Sale (POS) interface for every operator who selects that customer.
This issue affects ERPNext: 16.16.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA: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
ERPNext 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ERPNext是印度ERPNext公司的一套开源的企业资源计划解决方案。 ERPNext 16.16.0版本存在安全漏洞，该漏洞源于经过身份验证的用户可在客户记录的电子邮件或手机字段中持久化任意HTML/JavaScript，并在销售点界面中触发未转义渲染。
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
II. Public POCs for CVE-2026-42840
| # | POC Description | Source Link | Shenlong Link |
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Vendor Advisories for CVE-2026-42840 (1)
IV. Related Vulnerabilities
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V. Comments for CVE-2026-42840
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