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CVE-2026-33302— OpenEMR: zhAclCheck Ignores Explicit ACL Denies

EPSS 0.11% · P30
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I. Basic Information for CVE-2026-33302

Vulnerability Information
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Vulnerability Title
OpenEMR: zhAclCheck Ignores Explicit ACL Denies
Source: NVD (National Vulnerability Database)
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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
授权机制不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
OpenEMR 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenEMR是OpenEMR社区的一套开源的医疗管理系统。该系统可用于医疗实践管理、电子医疗记录、处方书写和医疗帐单申请。 OpenEMR 8.0.0.2之前版本存在安全漏洞，该漏洞源于模块ACL函数仅检查allow而忽略deny，可能导致管理员无法通过设置为deny来撤销访问权限。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
openemropenemr < 8.0.0.2 -

II. Public POCs for CVE-2026-33302

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III. Intelligence Information for CVE-2026-33302

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Same Patch Batch · openemr · 2026-03-19 · 12 CVEs total

CVE-2026-322389.1 CRITICALOpenEMR has Remote Code Execution in backup functionality
CVE-2026-333468.7 HIGHOpenEMR has stored XSS in portal_payment.php via Unescaped table_args
CVE-2026-259286.5 MEDIUMOpenEMR Vulnerable to Path Traversal When Zipping DICOM Folders
CVE-2026-257446.5 MEDIUMOpenEMR: POST /api/.../vital Accepts Attacker-Supplied id and Overwrites Arbitrary Vitals
CVE-2026-333046.5 MEDIUMOpenEMR has Authorization Bypass in Dated Reminders Log
CVE-2026-333055.4 MEDIUMOpenEMR has Authorization Bypass in FaxSMS AppDispatch Constructor
CVE-2026-333035.4 MEDIUMOpenEMR Vulnerable to Stored XSS via Unescaped portal_login_username in Credential Print V
CVE-2026-321194.4 MEDIUMOpenEMR has Stored DOM XSS via SearchHighlight text-node reconstruction on Custom Report p
CVE-2026-33301OpenEMR has arbitrary image file read via PDF generator
CVE-2026-33321OpenEMR has Out-of-Band Server-Side Request Forgery (OOB SSRF)
CVE-2026-33299OpenEMR has Stored XSS in patient encounter Eye Exam form answers

IV. Related Vulnerabilities

Same product: openemr
Same vendor: openemr
Same weakness: CWE-863

V. Comments for CVE-2026-33302

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