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.
Metrics
Affected Vendors & Products
References
History
Fri, 20 Mar 2026 21:15:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
Fri, 20 Mar 2026 16:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Open-emr
Open-emr openemr |
|
| CPEs | cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:* | |
| Vendors & Products |
Open-emr
Open-emr openemr |
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| Metrics |
cvssV3_1
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Fri, 20 Mar 2026 09:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Openemr
Openemr openemr |
|
| Vendors & Products |
Openemr
Openemr openemr |
Thu, 19 Mar 2026 20:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | 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. | |
| Title | OpenEMR: zhAclCheck Ignores Explicit ACL Denies | |
| Weaknesses | CWE-863 | |
| References |
| |
| Metrics |
cvssV4_0
|
Status: PUBLISHED
Assigner: GitHub_M
Published: 2026-03-19T20:23:17.172Z
Updated: 2026-03-20T20:20:42.266Z
Reserved: 2026-03-18T18:55:47.428Z
Link: CVE-2026-33302
Updated: 2026-03-20T20:20:37.131Z
Status : Analyzed
Published: 2026-03-19T21:17:11.380
Modified: 2026-03-20T15:53:44.370
Link: CVE-2026-33302
No data.