CVE-2026-33911

MEDIUM EPSS 13.5%
Published Mar 25, 20263mo ago · Modified Jun 17, 20261w ago
5.4 CVSS 3.1
Medium
Find Similar
Published Mar 25, 2026 3mo ago
Last Modified Jun 17, 2026 1w ago

Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0.3, the POST parameter `title` is reflected back in a JSON response built with `json_encode()`. Because the response is served with a `text/html` Content-Type, the browser interprets injected HTML/script tags rather than treating the output as JSON. An authenticated attacker can craft a request that executes arbitrary JavaScript in a victim's session. Version 8.0.0.3 contains a fix.

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
13.5% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-79 Cross-site Scripting Injection

Affected Products 1

VendorProductVersionRange
open-emropenemr* <8.0.0.3

References 3

  • github.com https://github.com/openemr/openemr/commit/64e8befa0a49f85dd5e2a85c91f3f8b9e565896f
    Patch
  • github.com https://github.com/openemr/openemr/releases/tag/v8_0_0_3
    Product
  • github.com https://github.com/openemr/openemr/security/advisories/GHSA-wwhf-6cvc-6766
    Vendor Advisory

Remediation

  • github.com https://github.com/openemr/openemr/commit/64e8befa0a49f85dd5e2a85c91f3f8b9e565896f
    Patch