TI-2026-28365 Aliases CVE-2026-39380

Open Source Point of Sale has Stored XSS in Stock Location (Configuration)

MEDIUM 58CWE-79Published 2026-04-07 · Updated 2026-04-08

Key facts

Attack vector: Network
Privileges required: Low
User interaction: Required
Attack complexity: Low
Impact type: Cross-site scripting
Confidentiality · integrity · availability: Low · Low · None
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00168 6th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed opensourcepos (opensourcepos): 3.4.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
opensourcepos	opensourcepos	before 3.4.3	3.4.3	Patch available	CNA

opensourcepos Vendoropensourcepos Affected before 3.4.3 Fixed in 3.4.3 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:opensourcepos:open_source_point_of_sale::::::::	before 3.4.3	Vulnerable	opensourcepos

cpe:2.3:a:opensourcepos:open_source_point_of_sale:*:*:*:*:*:*:*:* Versions before 3.4.3 Vulnerable ·opensourcepos

Remediation

Fix · CNA opensourcepos (opensourcepos) Fixed in 3.4.3

Timeline

2026-10-02 Threatist record created from CVE-2026-39380

References

Exploit 1

https://github.com/opensourcepos/opensourcepos/security/advisories/GHSA-7hg5-68rx-xpmg

TI-2026-25347 Open Source Point of Sale is Vulnerable to SQL Injection Through its Item Search Functionality CVSS 3.1HIGH 8.8
TI-2025-41982 opensourcepos has Cross-Site Request Forgery vulnerability that leads to Unauthorized Administrator Creation CVSS 3.1HIGH 8.8
TI-2025-41728 opensourcepos has a Cross-site Scripting vulnerability CVSS 3.1HIGH 8.1
TI-2025-43027 An issue in OpenSourcePOS v3.4.1 allows attackers to execute arbitrary code via returning a crafted AJAX response. CVSS 3.1HIGH 7.4
TI-2025-41087 A Cross-site scripting (XSS) vulnerability in Create/Update Customer(s) in Open Source… CVSS 3.1HIGH 7.2
TI-2025-41086 A Cross-site scripting (XSS) vulnerability in Create/Update Item(s) Module in Open Source… CVSS 3.1HIGH 7.2

See all 18 →

Sources

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