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CVE-2026-33934 - Vulnerability Analysis

MediumCVSS: 4.3

Last Updated: March 26, 2026

OpenEMR - Broken Access Control

Published: March 26, 2026Updated: March 26, 2026PoC AvailableRemote Exploitable

Overview

OpenEMR < 8.0.0.3 contains a broken access control caused by missing authorization check in portal/sign/lib/show-signature.php, letting authenticated patient portal users retrieve staff signature images by supplying arbitrary user values.

Severity & Score

Severity: Medium

CVSS Score: 4.3

Impact

Authenticated patient users can access staff signature images, risking sensitive information disclosure and potential misuse.

Mitigation

Upgrade to version 8.0.0.3 or later.

References

https://github.com/openemr/openemr/security/advisories/GHSA-w9w5-7x6h-657q
https://github.com/openemr/openemr/commit/ae7ee1872d2e6300b165e24687cc90cf6847a4e5
https://github.com/openemr/openemr/releases/tag/v8_0_0_3

Related Resources

Vulnerability Intelligence Dashboard
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Details

CVE ID: CVE-2026-33934
Severity: Medium
CVSS Score: 4.3
Type: broken_access_control
Status: confirmed

CWE

CWE-639

CVSS Metrics

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N