CVE-2026-33303

MEDIUM EPSS 14.9%
Published Mar 19, 20263mo ago · Modified Mar 20, 20263mo ago
5.4 CVSS 3.1
Medium
Find Similar
Published Mar 19, 2026 3mo ago
Last Modified Mar 20, 2026 3mo ago

Description

OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.2 are vulnerable to stored cross-site scripting (XSS) via unescaped `portal_login_username` in the portal credential print view. A patient portal user can set their login username to an XSS payload, which then executes in a clinic staff member's browser when they open the "Create Portal Login" page for that patient. This crosses from the patient session context into the staff/admin session context. Version 8.0.0.2 fixes the issue.

CVSS Details

Base Score
5.4
Exploitability
2.3
Impact
2.7
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction Required
Scope Changed
Confidentiality Low
Integrity Low
Availability None

Threat Intelligence

EPSS Exploit Probability
14.9% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
open-emropenemr* <8.0.0.2

References 2

  • github.com https://github.com/openemr/openemr/commit/c32139b5144b1c704015221520ad2f931e25f10d
    Patch
  • github.com https://github.com/openemr/openemr/security/advisories/GHSA-cp37-pmfx-5mhm
    ExploitVendor Advisory

Remediation

  • github.com https://github.com/openemr/openemr/commit/c32139b5144b1c704015221520ad2f931e25f10d
    Patch