EUVD-2026-13221Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate as low-privilege user
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DeliveryUser inherits allow from group membership
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ExploitRequest protected resource
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ExecutionACL check ignores explicit deny rules
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ImpactAccess granted despite administrative restrictions
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization logic validation
MITRE ATT&CK
1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | OpenEMR versions prior to 8.0.0.2. Attacker must be an authenticated user whose group has 'allow' ACL permission. Administrator cannot explicitly deny access via 'deny' setting; group-level allow overrides individual denies. Default ACL configurations affected. |
| Impact | CVSS 8.1. EPSS 0.0%. No patch confirmed. |
| Exploit ScenarioDerived | An attacker could exploit this vulnerability in OpenEMR to compromise the security of affected deployments, potentially impacting confidentiality, integrity, or availability. |
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Alert meAnalysisAIv1 – Mar 19, 2026
A remote code execution vulnerability in OpenEMR (CVSS 8.1). High severity vulnerability requiring prompt remediation.
Earlier versions of this analysis (1)
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0.2, the module ACL function AclMain::zhAclCheck() only checks for the presence
RemediationAI
Monitor vendor channels for patch availability.
Affected VersionsENISA
Affected Packages
Source: OSV (Open Source Vulnerabilities)
Affects your stack
Affects 1 package in euvd
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
CWE-863 (Incorrect Authorization). CVSS 8.1 indicates high severity. Affects OpenEMR.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
3DescriptionGitHub Advisory
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0.2, the module ACL function AclMain::zhAclCheck() only checks for the presence of any "allow" (user or group). It never checks for explicit "deny" (allowed=0). As a result, administrators cannot revoke access by setting a user or group to "deny"; if the user is in a group that has "allow," access is granted regardless of explicit denies. Version 8.0.0.2 fixes the issue.
Executive ViewAI
OpenEMR contains a remote code execution vulnerability (CVSS 8.1) that could allow attackers to execute arbitrary code on healthcare systems, directly compromising patient data confidentiality, integrity, and system availability. Immediate patching is critical to prevent unauthorized access to protected health information and operational disruption.
Apply vendor patch.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
VulDB
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
An authenticated SQL injection vulnerability exists in OpenEMR ≤ 4.1.1 Patch 14 that allows a low-privileged attacker to
Unauthenticated token disclosure in OpenEMR before 8.0.0. CVSS 10.0. PoC and patch available.
Path traversal in OpenEMR 7.0.4 disposeDocument() allows file access. PoC available.
Path traversal in OpenEMR electronic health records before fix allows authenticated users to read arbitrary files on the
SQL injection in OpenEMR electronic health records before fix. Authenticated users can execute arbitrary SQL through the
OpenEMR 7.0.2 is vulnerable to SQL Injection via \openemr\library\classes\Pharmacy.class.php, \controllers\C_Pharmacy.cl
An issue in OpenEMR 7.0.2 allows a remote attacker to escalate privileges viaa crafted POST request using the noteid par
Information disclosure in OpenEMR 5.0.2 to before 8.0.0 exposes sensitive data. PoC and patch available.
Remote code execution in OpenEMR through 8.2.0 lets an authenticated administrator poison the document category tree so
interface/fax/fax_dispatch.php in OpenEMR 4.1.0 allows remote authenticated users to execute arbitrary commands via shel
interface/globals.php in OpenEMR 2.x, 3.x, and 4.x before 4.2.0 patch 2 allows remote attackers to bypass authentication
Authentication bypass vulnerability in portal/account/register.php in versions of OpenEMR before 5.0.1.4 allows a remote
Exploit-DB