Vulnerability 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.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Open-Emr | Openemr | < 8.0.0.2 |
Related Weaknesses (CWE)
References
- https://github.com/openemr/openemr/commit/0ef9b1763029e52d43fcb4fd0ebb0769a7ec43Patch
- https://github.com/openemr/openemr/security/advisories/GHSA-v68v-pwc4-8p2mExploitVendor Advisory
FAQ
What is CVE-2026-33302?
CVE-2026-33302 is a vulnerability with a CVSS score of 8.1 (HIGH). 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 ...
How severe is CVE-2026-33302?
CVE-2026-33302 has been rated HIGH with a CVSS base score of 8.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33302?
Check the references section above for vendor advisories and patch information. Affected products include: Open-Emr Openemr.