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

> Authenticated low-privileged users can change other users' passwords, including administrators, by manipulating the employee_id parameter due to missing authorization checks.

- **Severity:** Medium 6.5 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Mar 2026
- **Updated:** 27 Mar 2026
- **Also known as:** GHSA-mcc2-8rp2-q6ch

## What is CVE-2026-33730?

CVE-2026-33730 is a medium-severity missing authorization vulnerability in opensourcepos, published on 27 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### 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.

Weakness: CWE-639 (Authorization Bypass Through User-Controlled Key)

## Which versions are affected by CVE-2026-33730?

It affects 1 product.


Products: Opensourcepos Open Source Point of Sale.

## How do I fix CVE-2026-33730?

No fix has been published for CVE-2026-33730 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-33730 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33730 exists.

## Other vulnerabilities in opensourcepos

- [CVE-2026-32888](https://insights.sbomify.com/CVE-2026-32888/): Open Source Point of Sale is Vulnerable to SQL Injection Through its Item Search Functionality (high 8.8)
- [CVE-2026-26746](https://insights.sbomify.com/CVE-2026-26746/): Path traversal in n/a (high 8.8)
- [CVE-2025-68434](https://insights.sbomify.com/CVE-2025-68434/): opensourcepos has Cross-Site Request Forgery vulnerability that leads to Unauthorized Administrator Creation (high 8.8)
- [CVE-2025-68147](https://insights.sbomify.com/CVE-2025-68147/): opensourcepos has a Cross-site Scripting vulnerability (high 8.1)
- [CVE-2025-63800](https://insights.sbomify.com/CVE-2025-63800/): Auth bypass in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-33730 and fix it if it is affected.

What it is: CVE-2026-33730 is a medium-severity missing authorization vulnerability in opensourcepos, published on 27 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33730 exists.

Affected product: opensourcepos. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-33730/ (Markdown: https://insights.sbomify.com/CVE-2026-33730/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33730
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33730
- OSV: https://osv.dev/vulnerability/CVE-2026-33730

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-33730/
Summaries are generated and may contain mistakes; the official description above is the record.