Secuno
ENNL
Book demo

CVE-2025-66921

Opensourcepos Open Source Point Of Sale cross-site scripting (XSS)

7.2 HIGHPublic exploitEPSS 0.55%
  1. Published17 Dec 2025

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredHigh
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected products

Opensourcepos Open Source Point Of Sale3.4.1

Remediation

No fixed version is recorded in the NVD data. Check the vendor advisory for the latest guidance.

References

Related CVEs

Recent high-severity vulnerabilities sharing a weakness type.

CVE-2026-928838.7
GitLab has remediated an issue in GitLab CE/EE affecting all versions from 19.1 before…
CVE-2026-938868.3
IBM i 7.3, 7.4, 7.5, and 7.6 could allow a remote authenticated attacker to execute…
CVE-2026-1096338.1
Frappe ERPNext before 15.119.1 and 16.x before 16.32.0 contains a stored cross-site…
CVE-2025-714328.1
Frappe ERPNext before 14.92.1 and 15.x before 15.83.0 contains a reflected cross-site…
CVE-2026-843178.8
Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1,…
CVE-2026-843168.8
Nginx UI is a web user interface for the Nginx web server. Prior to 2.4.1,…

Frequently asked

Is CVE-2025-66921 being actively exploited?

CVE-2025-66921 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.55%.

How severe is CVE-2025-66921?

CVE-2025-66921 has a CVSS 3.1 base score of 7.2, rated high. EPSS estimates a 0.55% probability of exploitation.

Which products are affected by CVE-2025-66921?

Affected products include Opensourcepos Open Source Point Of Sale.

How do I fix CVE-2025-66921?

Apply the vendor's patch or advisory guidance, then verify no affected versions remain across your devices.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-66921 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

See how prioritisation worksBook a demo

Get Patch this first every Monday

Five vulnerabilities that matter this week, ranked on real exploitation. Plain language, one email, no spam.

You can unsubscribe with one click from every issue. We handle your details as described in our privacy policy.

Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.