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

Severity: high (CVSS 7.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2026-03-19 · updated 2026-06-17
Weakness: CWE-918

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.

Affected products

openemr: before 8.0.0.2 — fixed in 8.0.0.2

How to fix

Upgrade to a fixed version: openemr 8.0.0.2. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-33321 or the next vulnerability affects your stack