Vulnerability Details CVE-2026-33302
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 11.3%
CVSS Severity
CVSS v3 Score 8.1
References
Products affected by CVE-2026-33302
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cpe:2.3:a:open-emr:openemr:-
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cpe:2.3:a:open-emr:openemr:2.0.1.2
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cpe:2.3:a:open-emr:openemr:2.7
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cpe:2.3:a:open-emr:openemr:2.7.1
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cpe:2.3:a:open-emr:openemr:2.7.2
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cpe:2.3:a:open-emr:openemr:2.7.3
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cpe:2.3:a:open-emr:openemr:2.8.0
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cpe:2.3:a:open-emr:openemr:2.8.1
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cpe:2.3:a:open-emr:openemr:2.8.2
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cpe:2.3:a:open-emr:openemr:2.8.3
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cpe:2.3:a:open-emr:openemr:2.9.0
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cpe:2.3:a:open-emr:openemr:3.0.0
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cpe:2.3:a:open-emr:openemr:3.0.1
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cpe:2.3:a:open-emr:openemr:3.1.0
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cpe:2.3:a:open-emr:openemr:3.2.0
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cpe:2.3:a:open-emr:openemr:4.0.0
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cpe:2.3:a:open-emr:openemr:4.1.0
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cpe:2.3:a:open-emr:openemr:4.1.1
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cpe:2.3:a:open-emr:openemr:4.1.2
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cpe:2.3:a:open-emr:openemr:4.1.2.3
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cpe:2.3:a:open-emr:openemr:4.1.2.6
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cpe:2.3:a:open-emr:openemr:4.1.2.7
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cpe:2.3:a:open-emr:openemr:4.2.0
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cpe:2.3:a:open-emr:openemr:4.2.0.3
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cpe:2.3:a:open-emr:openemr:4.2.1
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cpe:2.3:a:open-emr:openemr:4.2.2
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cpe:2.3:a:open-emr:openemr:5.0.0
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cpe:2.3:a:open-emr:openemr:5.0.0.5
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cpe:2.3:a:open-emr:openemr:5.0.0.6
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cpe:2.3:a:open-emr:openemr:5.0.1
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cpe:2.3:a:open-emr:openemr:5.0.1-6
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cpe:2.3:a:open-emr:openemr:5.0.1.1
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cpe:2.3:a:open-emr:openemr:5.0.1.2
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cpe:2.3:a:open-emr:openemr:5.0.1.3
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cpe:2.3:a:open-emr:openemr:5.0.1.4
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cpe:2.3:a:open-emr:openemr:5.0.1.5
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cpe:2.3:a:open-emr:openemr:5.0.1.6
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cpe:2.3:a:open-emr:openemr:5.0.1.7
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cpe:2.3:a:open-emr:openemr:5.0.2
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cpe:2.3:a:open-emr:openemr:5.0.2.1
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cpe:2.3:a:open-emr:openemr:5.0.2.2
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cpe:2.3:a:open-emr:openemr:5.0.2.3
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cpe:2.3:a:open-emr:openemr:5.0.2.4
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cpe:2.3:a:open-emr:openemr:5.0.2.5
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cpe:2.3:a:open-emr:openemr:6.0.0
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cpe:2.3:a:open-emr:openemr:6.0.0.1
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cpe:2.3:a:open-emr:openemr:6.0.0.2
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cpe:2.3:a:open-emr:openemr:6.0.0.3
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cpe:2.3:a:open-emr:openemr:6.0.0.4
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cpe:2.3:a:open-emr:openemr:6.1.0
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cpe:2.3:a:open-emr:openemr:6.1.0.1
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cpe:2.3:a:open-emr:openemr:7.0.0
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cpe:2.3:a:open-emr:openemr:7.0.0.1
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cpe:2.3:a:open-emr:openemr:7.0.0.2
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cpe:2.3:a:open-emr:openemr:7.0.1
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cpe:2.3:a:open-emr:openemr:7.0.1.1
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cpe:2.3:a:open-emr:openemr:7.0.2
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cpe:2.3:a:open-emr:openemr:7.0.2.1
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cpe:2.3:a:open-emr:openemr:7.0.2.2
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cpe:2.3:a:open-emr:openemr:7.0.2.3
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cpe:2.3:a:open-emr:openemr:7.0.3
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cpe:2.3:a:open-emr:openemr:7.0.3.1
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cpe:2.3:a:open-emr:openemr:7.0.3.2
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cpe:2.3:a:open-emr:openemr:7.0.3.3
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cpe:2.3:a:open-emr:openemr:7.0.3.4
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cpe:2.3:a:open-emr:openemr:7.0.4
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cpe:2.3:a:open-emr:openemr:7.3.0
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cpe:2.3:a:open-emr:openemr:8.0.0