What is CVE-2026-39380?

CVE-2026-39380 is a medium-severity vulnerability in Opensourcepos Open Source Point Of Sale, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-07.

How severe is CVE-2026-39380?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Opensourcepos Open Source Point Of Sale

CVE-2026-39380

Open Source Point of Sale is a web based point-of-sale application written in PHP using CodeIgniter framework. Prior to 3.4.3, a Stored Cross-Site Scripting (XSS) vulnerability exists in the Stock Locations configuration feature. The application fails to properly sanitize user input supplied through the stock_location parameter, allowing attackers to inject malicious JavaScript code that is stored in the database and executed when rendered in the Employees interface. This vulnerability is fixed in 3.4.3.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (5.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Opensourcepos Open_source_point_of_sale
Opensourcepos — versions < 3.4.3

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)

Frequently asked questions

What is CVE-2026-39380?: CVE-2026-39380 is a medium-severity vulnerability in Opensourcepos Open Source Point Of Sale, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2026-04-07.
How severe is CVE-2026-39380?: Medium severity. CVSS v3 base score is 5.4 out of 10.