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CVE-2026-42839— ERPNext 16.16.0 - Stored XSS in POS cart item rendering

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版本存在跨站脚本漏洞，该漏洞源于具有项目记录编辑权限的用户可在项目名称、描述或图像字段中持久化任意HTML/JavaScript，并在销售点购物车界面中触发未转义渲染。

AI Predicted 5.4 Difficulty: Trivial EPSS 0.26% · P18

Possible ATT&CK Techniques 1 AI

T1059 · Command and Scripting Interpreter

Affected Version Matrix 1

VendorProduct Version RangeStatus
Frappe ERPNext 16.16.0 affected
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I. Basic Information for CVE-2026-42839

Vulnerability Information
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Vulnerability Title
ERPNext 16.16.0 - Stored XSS in POS cart item rendering
Source: CVE Program / CVE List V5
Vulnerability Description
An authenticated ERPNext user with Item record edit permissions can persist arbitrary HTML/JavaScript in the item_name, description, or image fields of an Item and trigger unescaped rendering in the Point of Sale (POS) cart interface for every operator who adds that item to a transaction.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:H/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 跨站脚本漏洞
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版本存在跨站脚本漏洞，该漏洞源于具有项目记录编辑权限的用户可在项目名称、描述或图像字段中持久化任意HTML/JavaScript，并在销售点购物车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

Vendor Product Affected Versions CPE Subscribe
Frappe ERPNext 16.16.0 -

II. Public POCs for CVE-2026-42839

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III. Intelligence Information for CVE-2026-42839

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Vendor Advisories for CVE-2026-42839 (1)

IV. Related Vulnerabilities

Same product: ERPNext
Same vendor: Frappe
Same weakness: CWE-79