Openemr
CVE-2026-24890
HIGH
Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata – not a confirmed exploit chain
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AccessAuthenticate as portal user
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DeliveryAccess signature endpoint
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ExploitSet type=admin-signature parameter
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ExecutionSpecify target provider user ID
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PersistUpload forged signature
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ImpactOverwrite legitimate provider signature
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V8 - Authorization Authorization verification
MITRE ATT&CK
1 technique across 1 tactic: Defense Evasion The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Exploitation Conditions | Authenticated patient portal user account required on OpenEMR versions prior to 8.0.0 with signature upload functionality enabled in the patient portal. The vulnerability requires valid portal user credentials to access the signature endpoint. |
| Impact | CVSS 8.1 (HIGH). Attack vector: Network. Complexity: Low. Privileges required: Low. User interaction: None. Exploitation requires authentication. Public exploit/POC available. |
| Exploit ScenarioDerived | An attacker (requires authentication) could exploit this vulnerability to compromise the affected system. |
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Alert meAnalysisAIv1 – Mar 12, 2026
OpenEMR versions prior to 8.0.0 contain an authorization bypass in the patient portal that allows authenticated users to forge provider signatures by uploading files with admin-signature type parameters for any provider. Public exploit code exists for this vulnerability, which could enable signature forgery on medical documents, creating legal and compliance risks. Upgrade to version 8.0.0 or later to remediate this high-severity flaw.
Earlier versions of this analysis (1)
OpenEMR is a free and open source electronic health records and medical practice management application. [CVSS 8.1 HIGH]
RemediationAI
A vendor patch is available — apply it immediately. Restrict network access to the affected service where possible.
Affects your stack
Find out whether the stacks and servers you run are on an affected version.
Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
Classified as CWE-285 (Improper Authorization). Affects the patient portal signature component of Openemr. OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, an authorization bypass vulnerability in the patient portal signature endpoint allows authenticated portal users to upload and overwrite provider signatures by setting type=admin-signature and specifying any provider user ID. This could potentially lead to signature forgery on medical documents, legal compliance violations, and fraud. The issue occurs when portal use
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Primary rating from GitHub Advisory · only source for this CVE.
CVSS VectorGitHub Advisory
Lifecycle Timeline
3DescriptionGitHub Advisory
OpenEMR is a free and open source electronic health records and medical practice management application. Prior to version 8.0.0, an authorization bypass vulnerability in the patient portal signature endpoint allows authenticated portal users to upload and overwrite provider signatures by setting type=admin-signature and specifying any provider user ID. This could potentially lead to signature forgery on medical documents, legal compliance violations, and fraud. The issue occurs when portal users are allowed to modify provider signatures without proper authorization checks. Version 8.0.0 fixes the issue.
Executive ViewAI
OpenEMR installations are vulnerable to a high-severity attack (CVE-2026-24890) with a public exploit available, potentially exposing protected health information and disrupting clinical operations. Organizations running OpenEMR must prioritize patching immediately, as the low exploitation probability (0.1% EPSS) may not reflect actual threat activity once exploits become widely distributed.
Apply vendor patch.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.
Affected Products (CPE)GitHub Advisory
An authenticated SQL injection vulnerability exists in OpenEMR ≤ 4.1.1 Patch 14 that allows a low-privileged attacker to
Unauthenticated token disclosure in OpenEMR before 8.0.0. CVSS 10.0. PoC and patch available.
Path traversal in OpenEMR 7.0.4 disposeDocument() allows file access. PoC available.
Path traversal in OpenEMR electronic health records before fix allows authenticated users to read arbitrary files on the
SQL injection in OpenEMR electronic health records before fix. Authenticated users can execute arbitrary SQL through the
OpenEMR 7.0.2 is vulnerable to SQL Injection via \openemr\library\classes\Pharmacy.class.php, \controllers\C_Pharmacy.cl
An issue in OpenEMR 7.0.2 allows a remote attacker to escalate privileges viaa crafted POST request using the noteid par
Information disclosure in OpenEMR 5.0.2 to before 8.0.0 exposes sensitive data. PoC and patch available.
Remote code execution in OpenEMR through 8.2.0 lets an authenticated administrator poison the document category tree so
interface/fax/fax_dispatch.php in OpenEMR 4.1.0 allows remote authenticated users to execute arbitrary commands via shel
interface/globals.php in OpenEMR 2.x, 3.x, and 4.x before 4.2.0 patch 2 allows remote attackers to bypass authentication
Authentication bypass vulnerability in portal/account/register.php in versions of OpenEMR before 5.0.1.4 allows a remote
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