What is CVE-2026-33301?

CVE-2026-33301 is a high-severity vulnerability in Open-Emr Openemr, classified under Improper Encoding or Escaping of Output. CVSS score: 8.1/10. Published 2026-03-19.

How severe is CVE-2026-33301?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in Open-Emr Openemr

CVE-2026-33301

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 arbitrary file read vulnerability was identified in the PDF creation function where the form answers are parsed as unescaped HTML, allowing an attacker to include arbitrary image files from the server in the generated PDF. Version 8.0.0.2 fixes the issue.

EPSS: 0.004 (36.4th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.

Affected products

Open-emr Openemr
Openemr — versions < 8.0.0.2

Weakness classification (CWE)

CWE-116 — Improper Encoding or Escaping of Output

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33301?: CVE-2026-33301 is a high-severity vulnerability in Open-Emr Openemr, classified under Improper Encoding or Escaping of Output. CVSS score: 8.1/10. Published 2026-03-19.
How severe is CVE-2026-33301?: High severity. CVSS v3 base score is 8.1 out of 10.