OpenEMR before 8.5.0 contains a missing authorization vulnerability in create_portallogin.php that allows low-privilege authenticated users to replace patient portal credentials without ACL checks. Attackers can select a victim patient in session and post replacement credentials to take over portal accounts, read PHI, and lock patients out.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
openemr openemr unaffected
Version Status Constraints
0 affected < 8.5.0
8.5.0 unaffected —

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Project Subscriptions

Vendors Products
Open-emr Subscribe
Openemr Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://github.com/openemr/openemr/security/advisories/GHSA-83hq-c876-fcwf cve-icon
https://www.vulncheck.com/advisories/openemr-before-8.5.0-missing-authorization-via-create-portallogin-php-portal-takeover cve-icon
History

Fri, 13 Nov 2026 09:45:00 +0000

Type Values Removed Values Added
Description OpenEMR before 8.5.0 contains a missing authorization vulnerability in create_portallogin.php that allows low-privilege authenticated users to replace patient portal credentials without ACL checks. Attackers can select a victim patient in session and post replacement credentials to take over portal accounts, read PHI, and lock patients out.
Title OpenEMR before 8.5.0 Missing Authorization via create_portallogin.php Portal Takeover
First Time appeared Open-emr
Open-emr openemr
Weaknesses CWE-862
CPEs cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*
Vendors & Products Open-emr
Open-emr openemr
References
Metrics cvssV3_1

{'score': 8.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N'}

cvssV4_0

{'score': 8.6, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-11-13T09:35:18.835Z

Reserved: 2026-11-10T21:38:36.342Z

Link: CVE-2026-126442

cve-icon Vulnrichment

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cve-icon NVD

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cve-icon Redhat

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cve-icon OpenCVE Enrichment

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Weaknesses