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CVE-2026-33321

Open-emr Openemr server-side request forgery (SSRF)

7.6 HIGHPublic exploitEPSS 0.33%
  1. Published19 Mar 2026

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Affected products

Open-emr Openemr< 8.0.0.2

Remediation

Fixed in
Open-emr Openemr≥ 8.0.0.2

References

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Frequently asked

Is CVE-2026-33321 being actively exploited?

CVE-2026-33321 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.33%.

How severe is CVE-2026-33321?

CVE-2026-33321 has a CVSS 3.1 base score of 7.6, rated high. EPSS estimates a 0.33% probability of exploitation.

Which products are affected by CVE-2026-33321?

Affected products include Open-emr Openemr.

How do I fix CVE-2026-33321?

Upgrade affected software to a fixed version, for example Open-emr Openemr 8.0.0.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-33321 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.