CVE-2026-33321 OpenEMR has Out-of-Band Server-Side Request Forgery (OOB SSRF)

High 7.2 Published 19 Mar 2026 Updated 19 Mar 2026

Attackers with specific roles can trigger server-side requests via unescaped HTML in PDF generation, potentially accessing internal resources.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-33321?

CVE-2026-33321 is a high-severity server-side request forgery 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, users with the `Notes - my encounters` role can fill Eye Exam forms in patient encounters. The answers to the form can be printed out in PDF form. An Out-of-Band Server-Side Request Forgery (OOB SSRF) vulnerability was identified in the PDF creation function where the form answers are parsed as unescaped HTML, allowing an attacker to forge requests from the server made to external or internal resources. Version 8.0.0.2 fixes the issue.

Weakness: CWE-918

Which versions are affected by CVE-2026-33321?

It affects 1 product.

Products include Open-Emr Openemr.

How do I fix CVE-2026-33321?

No fix has been published for CVE-2026-33321 yet. Limit exposure of the affected software until one is available.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2026-33321 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-33321 exists.

All Open-Emr Openemr vulnerabilities

Sources

Also known as GHSA-5pc3-2crw-96rv.