CVE-2023-2566
Published: 08 May 2023
Summary
CVE-2023-2566 is a medium-severity Cross-site Scripting (CWE-79) vulnerability in Open-Emr Openemr. Its CVSS base score is 4.8 (Medium).
Operationally, ranked in the top 3.9% 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-2023-2566 is a stored cross-site scripting vulnerability (CWE-79) affecting the openemr/openemr repository prior to version 7.0.1. The flaw carries a CVSS 3.1 score of 4.8 with the vector AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N, indicating a network-reachable issue that requires high privileges and user interaction while producing limited confidentiality and integrity impact with changed scope.
An authenticated user holding administrative privileges can inject persistent malicious scripts into the application. When another user views the affected content, the script executes in that user's browser context, enabling actions such as limited data theft or unauthorized modifications within the application's security boundary.
The referenced commit a2adac7320dfc631b1da688c3b04f54b8240fc7b in the OpenEMR repository addresses the issue, and the associated huntr.dev report documents the coordinated disclosure. Upgrading to version 7.0.1 or applying the equivalent patch therefore constitutes the primary mitigation. The EPSS score has remained flat at 0.2332 with no reported real-world exploitation.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-34044
Vulnerability details
Cross-site Scripting (XSS) - Stored 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.