# CVE-2026-33305: OpenEMR has Authorization Bypass in FaxSMS AppDispatch Constructor

> Authenticated users can bypass ACL checks in the optional FaxSMS module to access patient appointment data without proper authorization.

- **Severity:** Medium 5.4 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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:** 19 Mar 2026
- **Updated:** 21 Mar 2026
- **Also known as:** GHSA-r973-h5cq-35rc

## What is CVE-2026-33305?

CVE-2026-33305 is a medium-severity missing authorization vulnerability in Open-Emr Openemr, published on 19 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0.2, an authorization bypass in the optional FaxSMS module (`oe-module-faxsms`) allows any authenticated OpenEMR user to invoke controller methods — including `getNotificationLog()`, which returns patient appointment data (PHI) — regardless of whether they hold the required ACL permissions. The `AppDispatch` constructor dispatches user-controlled actions and exits the process before any calling code can enforce ACL checks. Version 8.0.0.2 fixes the issue.

Weakness: CWE-862 (Missing Authorization), CWE-696 (Incorrect Behavior Order)

## Which versions are affected by CVE-2026-33305?

It affects 1 product.


Products: Open-Emr Openemr.

## How do I fix CVE-2026-33305?

No fix has been published for CVE-2026-33305 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-33305 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33305 exists.

## Other vulnerabilities in Open-Emr Openemr

- [CVE-2026-24898](https://insights.sbomify.com/CVE-2026-24898/): OpenEMR has an Unauthenticated MedEx Token Disclosure (critical 10.0)
- [CVE-2026-24849](https://insights.sbomify.com/CVE-2026-24849/): OpenEMR Arbitrary File Read Vulnerability (critical 10.0)
- [CVE-2026-24908](https://insights.sbomify.com/CVE-2026-24908/): OpenEMR has SQL Injection in Patient API Sort Parameter (critical 10.0)
- [CVE-2022-2734](https://insights.sbomify.com/CVE-2022-2734/): Improper Restriction of Rendered UI Layers or Frames in openemr/openemr (critical 10.0)
- [CVE-2024-22611](https://insights.sbomify.com/CVE-2024-22611/): SQL injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-33305 and fix it if it is affected.

What it is: CVE-2026-33305 is a medium-severity missing authorization vulnerability in Open-Emr Openemr, published on 19 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-2026-33305 exists.

Affected product: Open-Emr Openemr. 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-2026-33305/ (Markdown: https://insights.sbomify.com/CVE-2026-33305/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-33305
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-33305
- OSV: https://osv.dev/vulnerability/CVE-2026-33305

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-33305/
Summaries are generated and may contain mistakes; the official description above is the record.