CVE-2025-66921

HIGH

Open Source Point of Sale 3.4.1 - Stored Cross-Site Scripting via Item Name Parameter

Title source: llm

Description

A Cross-site scripting (XSS) vulnerability in Create/Update Item(s) Module in Open Source Point of Sale v3.4.1 allows remote attackers to inject arbitrary web script or HTML via the "name" parameter.

References (2)

Core 2

Core References

Exploit, Third Party Advisory

https://github.com/omkaryepre/vulnerability-research/blob/main/CVE-2025-66921/readme.md

View Exploit ZIP pw:eip

Product

https://github.com/opensourcepos/opensourcepos

Scores

CVSS v3 7.2

EPSS 0.0046

EPSS Percentile 36.6%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment

Exploitation poc

Automatable no

Technical Impact total

Details

CWE

CWE-20 CWE-79

Status published

Products (1)

opensourcepos/open_source_point_of_sale 3.4.1

Published Dec 17, 2025

Tracked Since Feb 18, 2026