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.

Is your site exposed to CVE-2025-66921?

Run a free security scan — no signup, results in seconds.

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.

Related Vulnerabilities

CVE-2025-13826

Zervit's portable HTTP/web server is vulnerable to remote DoS attacks when a configuration reset request is made. The vulnerability is …
CVE-2024-54011

Penetration Testing engineers at Amazon have discovered a flaw where the camera system fails to properly handle data supplied in …
CVE-2026-62656

A security flaw was found in certain NETGEAR RAX models that could allow a logged-in user to send specially crafted …
CVE-2026-62658

A security flaw was discovered in certain NETGEAR Nighthawk RAX series routers that could allow someone already logged in to …
CVE-2026-56349

n8n before version 2.10.0 contains an input validation vulnerability in the Guardrail node that allows attackers to bypass default guardrail …
CVE-2026-6409

A Denial of Service (DoS) vulnerability exists in the Protobuf PHP library during the parsing of untrusted input. Maliciously structured …

Don't wait for an exploit

Scan your website for vulnerabilities like CVE-2025-66921 — free, no signup required.