How severe is CVE-2026-33321?

CVE-2026-33321 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2026-33321 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33321?

CVE-2026-33321 affects Open-emr Openemr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33321?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-33321 have an EU (EUVD) identifier?

Yes. CVE-2026-33321 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13164.

When was CVE-2026-33321 published?

CVE-2026-33321 was published on 2026-03-19 and last updated on 2026-06-17.

CVE-2026-33321

CVE-2026-33321 is a high-severity vulnerability in Open-emr Openemr with a CVSS 3.x base score of 7.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-918.

Key facts

Severity: High (CVSS 3.x base score 7.6)
CVSS v4: 7.2
EPSS exploit prediction: 0% (20th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13164
Weakness: CWE-918
Affected product: Open-emr Openemr
Published: 2026-03-19
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-33321?: 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.
How severe is CVE-2026-33321?: CVE-2026-33321 has a CVSS 3.x base score of 7.6, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2026-33321 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (20th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33321?: CVE-2026-33321 affects Open-emr Openemr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33321?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-33321 have an EU (EUVD) identifier?: Yes. CVE-2026-33321 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13164.
When was CVE-2026-33321 published?: CVE-2026-33321 was published on 2026-03-19 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*

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