CVE-2025-66921 Cross-site scripting in n/a
Remote attackers can inject arbitrary web script or HTML via the name parameter in the Create/Update Item(s) module.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-66921?
CVE-2025-66921 is a high-severity cross-site scripting vulnerability in n/a, published on 17 Dec 2025. An attacker needs administrator access to exploit it, with no action from the victim.
Official 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.
Which versions are affected by CVE-2025-66921?
It affects 1 product.
Products include Opensourcepos Open Source Point of Sale.
How do I fix CVE-2025-66921?
No fix has been published for CVE-2025-66921 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2025-66921 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-66921 exists.
Other vulnerabilities in n/a
- CVE-2026-32888 Open Source Point of Sale is Vulnerable to SQL Injection Through its Item Search Functionality
- CVE-2026-26746 Path traversal in n/a
- CVE-2025-68434 opensourcepos has Cross-Site Request Forgery vulnerability that leads to Unauthorized Administrator Creation
- CVE-2025-68147 opensourcepos has a Cross-site Scripting vulnerability
- CVE-2025-63800 Auth bypass in n/a
Sources
Also known as GHSA-56hc-g777-9p48.