CVE-2026-33934: OpenEMR is a free and open source electronic health records and medical practice management application

Q: How do I fix CVE-2026-33934?

openemr: upgrade to 8.0.0.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-33934 being exploited?

CVE-2026-33934 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-33934 affect?

CVE-2026-33934 affects openemr. Severity is medium (CVSS 4.3). OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.3 have a missing authorization check in `portal/sign/lib/show-signature.php` that allows any authenticated pati

Q: How urgent is CVE-2026-33934?

Priority 24/100. Public exploit reference

Routine

MEDIUM 4.3UPGRADE

CVE-2026-33934 is a medium-severity flaw (CVSS 4.3) affecting openemr. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.3 have a missing authorization check in `portal/sign/lib/show-signature.php` that allows any authenticated patient portal user to retrieve the drawn signature image of any staff member by supplying an arbitrary `user` value in the POST body. The companion write endpoint (`save-signature.php`) was already hardened agains

Why this priority

Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	0.2% (top 84%)
CISA exploited list	No
Weakness	CWE-639, CWE-862
Published	2026-03-26
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: open-emr

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-26 00:16 UTCPublished CVE record published
2026-06-17 10:38 UTCUpdated Record last modified

open-emr openemr UPGRADE

Affected: < 8.0.0.3

Fixed in: 8.0.0.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openemr || rpm -q openemr || openemr --version

2. UPGRADE to 8.0.0.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openemr

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openemr

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33934?

openemr: upgrade to 8.0.0.3. Exact commands for each OS are on this page.

Is CVE-2026-33934 being exploited?

CVE-2026-33934 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33934 affect?

CVE-2026-33934 affects openemr. Severity is medium (CVSS 4.3). OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.3 have a missing authorization check in `portal/sign/lib/show-signature.php` that allows any authenticated pati

How urgent is CVE-2026-33934?

Priority 24/100. Public exploit reference

Software pages

PHP vulnerabilities

Related CVEs

CVE-2023-22974 HIGH 7.5 UPGRADE A Path Traversal in setup.php in OpenEMR < 7.0.0 allows remote unauthenticated users to read arbitrary files b
CVE-2023-22972 MEDIUM 5.4 UPGRADE A Reflected Cross-site scripting (XSS) vulnerability in interface/forms/eye_mag/php/eye_mag_functions.php in O
CVE-2026-39931 HIGH 7.2 UPGRADE OpenEMR through 8.2.0 contains an authenticated SQL injection vulnerability in the backup configuration import
CVE-2026-39932 CRITICAL 9.1 UPGRADE OpenEMR through 8.2.0 contains a remote code execution vulnerability in the document category tree component (
CVE-2026-67611 HIGH 8.1 UPGRADE OpenEMR through 8.2.0 contains an authentication bypass vulnerability that allows attackers with valid credent

References

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