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Medium · 5.1 CVE-2026-42840 EUVD-2026-34157GHSA-w2pq-xvqr-7fqw

ERPNext 16.16.0 - Stored XSS in POS customer section via unescaped template literals

Published Jun 3, 2026 · Updated Jun 3, 2026 · Assigned by Fluid Attacks

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.

Affected products

VendorProductAffectedFixed
Frappe ERPNext 16.16.0 —

References