CVE-2026-42840

EUVD-2026-34157
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.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
Fluid AttacksCNA
5.1 MEDIUM
NETWORK
LOW
LOW
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
Base Score
CVSS 3.x
EPSS Score
Percentile: Unknown
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
frappeerpnext
16.16.0
CNA
Common Weakness Enumeration
References
https://fluidattacks.com/es/advisories/weeknd
https://github.com/frappe/erpnext
https://fluidattacks.com/es/advisories/weeknd