PT-2026-28154 · Openemr · Openemr

Published 2026-03-25 · Updated 2026-03-26 · CVE-2026-33934

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions OpenEMR versions prior to 8.0.0.3

Description OpenEMR is an electronic health records and medical practice management application. A missing authorization check exists in portal/sign/lib/show-signature.php, allowing authenticated patient portal users to access the signature image of any staff member by manipulating the user parameter in the POST request. The save-signature.php endpoint was previously secured against this issue, but the show-signature.php endpoint remained vulnerable. The vulnerable parameter is user.

Recommendations Update to version 8.0.0.3 or later.

Exploit

Fix

IDOR

Missing Authorization

Weakness Enumeration

CWE-639

CWE-862

Related Identifiers

CVE-2026-33934

GHSA-W9W5-7X6H-657Q

Affected Products

Openemr

References · 7

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33934.json · Exploit
• https://github.com/openemr/openemr/security/advisories/GHSA-w9w5-7x6h-657q · Vendor Advisory
• https://github.com/openemr/openemr/commit/ae7ee1872d2e6300b165e24687cc90cf6847a4e5 · Patch
• https://osv.dev/vulnerability/CVE-2026-33934 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-33934 · Security Note
• https://github.com/openemr/openemr/releases/tag/v8_0_0_3 · Note
• https://twitter.com/CVEnew/status/2037137777641324907 · Twitter Post