CVE-2023-2949
Published: 28 May 2023
Summary
CVE-2023-2949 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Open-Emr Openemr. Its CVSS base score is 6.1 (Medium).
Operationally, ranked in the top 0.6% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
Deeper analysis
CVE-2023-2949 is a reflected cross-site scripting vulnerability (CWE-79) affecting the OpenEMR electronic health records platform in versions prior to 7.0.1. The flaw resides in the web application code and carries a CVSS 3.1 score of 6.1, reflecting network attack vector, low complexity, no required privileges, and required user interaction with changed scope.
An unauthenticated remote attacker can craft a malicious link that, when clicked by a victim user, executes arbitrary JavaScript in the context of the OpenEMR application. Successful exploitation allows limited reading and modification of application data visible to the victim while leaving availability unaffected.
The referenced commit af1ecf78d1342519791bda9d3079e88f7d859015 in the OpenEMR repository addresses the issue, and the project released version 7.0.1 containing the fix. Security practitioners should upgrade affected installations and verify that input sanitization and output encoding are applied to all reflected parameters.
The EPSS score for this CVE stands at 0.8643 with an identical peak value, indicating sustained exploitation interest since disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-34395
Vulnerability details
Cross-site Scripting (XSS) - Reflected in GitHub repository openemr/openemr prior to 7.0.1.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Penetration testing submits XSS payloads to web applications, detecting cross-site scripting flaws for subsequent remediation.
Validates web inputs to reject script-related content that could produce XSS.
Output validation against expected content can reject or sanitize script content in generated web pages, reducing XSS exploitability.