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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.002 (13.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 13th percentile — 13.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.001
Affected products
- Opensourcepos Open Source Point Of Sale
- Opensourcepos — versions < 3.4.3
Weakness classification (CWE)
References
- github.com/opensourcepos/opensourcepos/security/advisories/GHSA-7hg5-68rx-xpmg (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.