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CVE-2026-33913

Open-emr Openemr XML external entity (XXE)

7.7 HIGHPublic exploitEPSS 0.51%
  1. Published25 Mar 2026

Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.3, an authenticated user with access to the Carecoordination module can upload a crafted CCDA document containing `<xi:include href="file:///etc/passwd" parse="text"/>` to read arbitrary files from the server. Version 8.0.0.3 patches the issue.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredLow
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N

Affected products

Open-emr Openemr< 8.0.0.3

Remediation

Fixed in
Open-emr Openemr≥ 8.0.0.3

References

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Frequently asked

Is CVE-2026-33913 being actively exploited?

CVE-2026-33913 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.51%.

How severe is CVE-2026-33913?

CVE-2026-33913 has a CVSS 3.1 base score of 7.7, rated high. EPSS estimates a 0.51% probability of exploitation.

Which products are affected by CVE-2026-33913?

Affected products include Open-emr Openemr.

How do I fix CVE-2026-33913?

Upgrade affected software to a fixed version, for example Open-emr Openemr 8.0.0.3 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-33913 against the real software inventory on every managed device, as each hourly inventory arrives. 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.