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TI-2026-26109 Aliases CVE-2026-33730

Open Source Point of Sale has an IDOR in Password Change (Home)

Priority MEDIUM 62CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

Open Source Point of Sale (opensourcepos) is a web based point of sale application written in PHP using CodeIgniter framework. Prior to version 3.4.2, an Insecure Direct Object Reference (IDOR) vulnerability allows an authenticated low-privileged user to access the password change functionality of other users, including administrators, by manipulating the `employee_id` parameter. The application does not verify object ownership or enforce authorization checks. Version 3.4.2 adds object-level authorization checks to validate that the current user owns the employee_id being accessed.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00287 21st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed opensourcepos (opensourcepos): 3.4.2

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

VendorProductAffected versionsFixed inStatusSource
opensourceposopensourceposbefore 3.4.23.4.2Patch availableCNA
  • opensourcepos Vendoropensourcepos Affected before 3.4.2 Fixed in 3.4.2 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:opensourcepos:open_source_point_of_sale:*:*:*:*:*:*:*:*before 3.4.2Vulnerableopensourcepos
  • cpe:2.3:a:opensourcepos:open_source_point_of_sale:*:*:*:*:*:*:*:* Versions before 3.4.2 Vulnerable ·opensourcepos

Remediation

  • Fix · CNA opensourcepos (opensourcepos) Fixed in 3.4.2

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33730

References

Exploit 1

Patch 1

  • 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences