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CVE-2026-49391— Frappe: Stored XSS in Column Headers via Data Import

Quick assessment

Affected
frappe frappe
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.

Frappe是印度Frappe公司开源的一款构建业务应用的开发框架。 Frappe 16.19.0之前版本和15.109.0之前版本存在跨站脚本漏洞，该漏洞源于Data Import在渲染预览和结果之前未转义导入的列标题，可能导致已认证的导入者持久化脚本内容，当其他用户查看导入界面时执行。

CVSS 5.1 · Medium EPSS 0.47% · P38

Affected Version Matrix 2

VendorProduct Version RangeStatus
frappe frappe >= 16.0.0-beta.1, < 16.19.0 affected
< 15.109.0 affected
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I. Basic Information for CVE-2026-49391

Vulnerability Information
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Vulnerability Title
Frappe: Stored XSS in Column Headers via Data Import
Source: CVE Program / CVE List V5
Vulnerability Description
Frappe is a full-stack web application framework. Prior to 16.19.0 and 15.109.0, Data Import does not escape imported column headers before rendering previews and results, allowing an authenticated importer to persist script content that executes when another user views the import interface. This issue is fixed in versions 16.19.0 and 15.109.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/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
Frappe 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Frappe是印度Frappe公司开源的一款构建业务应用的开发框架。 Frappe 16.19.0之前版本和15.109.0之前版本存在跨站脚本漏洞，该漏洞源于Data Import在渲染预览和结果之前未转义导入的列标题，可能导致已认证的导入者持久化脚本内容，当其他用户查看导入界面时执行。
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 frappe >= 16.0.0-beta.1, < 16.19.0 -

II. Public POCs for CVE-2026-49391

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III. Intelligence Information for CVE-2026-49391

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Patches & Fixes for CVE-2026-49391 (2)

Vendor Advisories for CVE-2026-49391 (1)

Same Patch Batch · frappe · 2026-08-06 · 4 CVEs total

CVE-2026-47194 8.6 HIGH Frappe: Host header poisoning can redirect magic login links to an attacker-controlled dom
CVE-2026-47765 7.1 HIGH Frappe: Lack of Permissions in restore/bulk_restore
CVE-2026-47185 5.1 MEDIUM Frappe Has Broken Access Control in its Workspace Save API

IV. Related Vulnerabilities

Same product: frappe
Same vendor: frappe
Same weakness: CWE-79

V. Comments for CVE-2026-49391

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