Vulnerability · Published Mar 27, 2026 · Assigned by GitHub_M

CVE-2026-33730Open Source Point of Sale has an IDOR in Password Change (Home)

Medium 6.5

In plain English

A medium-severity authorization bypass via user-controlled key in opensourcepos from opensourcepos. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 21% of all known vulnerabilities).

Severity (CVSS 3.1)6.5Medium

Exploit odds (30 days)0.3%top 78.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
opensourcepos	opensourcepos	< 3.4.2

Weakness: CWE-639 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

References

https://github.com/opensourcepos/opensourcepos/security/advisories/GHSA-mcc2-8rp2-q6ch x_refsource_CONFIRM
https://github.com/opensourcepos/opensourcepos/commit/ee4d44ed396097d6010c5490ab4fd7cfae694624 x_refsource_MISC