CVE-2025-66921

HIGH
Published Dec 17, 2025 Modified Dec 18, 2025 CWE-20 CWE-79

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.

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CVSS v3.1 Score

7.2
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-20 Improper Input Validation
CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor Product
opensourcepos open_source_point_of_sale

References

Frequently Asked Questions

What is CVE-2025-66921? +
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. It has a CVSS v3.1 base score of 7.2 (HIGH).
How severe is CVE-2025-66921? +
CVE-2025-66921 has a CVSS v3.1 score of 7.2 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2025-66921? +
CVE-2025-66921 affects products from opensourcepos, specifically: open_source_point_of_sale. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2025-66921? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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