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CVE-2025-66923: A Cross-site scripting (XSS) vulnerability in Create/Update Customer(s) in Open Source Point of Sale v3.4.1 allows remote attackers to inject arbitrary web script or HTML via the phone_number param...

CVE-2025-66923 · published 10 months ago

Summary

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

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software

Vendor	Product	Affected versions
opensourcepos	open_source_point_of_sale	3.4.1 `cpe:2.3:a:opensourcepos:open_source_point_of_sale:3.4.1:::::::*`

Original advisory text

References

https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66923... Vendor Advisory
https://nvd.nist.gov/vuln/detail/CVE-2025-66923 Vendor Advisory
https://github.com/opensourcepos/opensourcepos Product
https://github.com/omkaryepre/vulnerability-research/blob/main/CVE-2025-66923/re... URL

Fix within

Internet-facing 14 days

Internal At next upgrade

Not known to be exploited
Needs hands-on effort to exploit
Gives an attacker full control

Severity

7.2 High

Exploitation

<1% chance of attack within 30 days

Type

CWE-20Improper Input Validation

CWE-79Cross-site Scripting (XSS)

Timeline

Published17 Dec 2025

Updated4 Nov 2026

First seen29 Sep 2026

Sources

CVE-2025-66923 · NVD

CVE-2025-66923 · OSV

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