Is this vulnerability remotely exploitable?

Yes. Any user who can remotely access the patient portal and authenticate with valid credentials could potentially exploit the issue, as the attack is carried out via standard web requests to the signature endpoint.

Does this vulnerability require administrative or provider-level access?

No. The vulnerability can be triggered by regular authenticated portal users because the authorization logic does not properly restrict provider signature modifications to provider or admin roles.

What is the safest general fix pattern for this issue?

The most robust fix is to enforce strict, server-side authorization checks for all signature operations, ensuring that only the appropriate provider or an explicitly authorized administrative role can upload or overwrite provider signatures. This includes ignoring client-supplied identifiers for authorization decisions and deriving permissions from trusted session data and role mappings.

Severity:

HIGH RISK

(8.1)

Authorization Bypass on Signature Endpoint (CWE-285) in OpenEMR Patient Portal

CVE-2026-24890

Published:

Feb 25, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Authorization Bypass

CWE:

CWE-285

Impact:

Privilege Escalation and Data Integrity Compromise

Severity:

HIGH RISK

(8.1)

CVSS Version:

3.1

Vulnerability Type

Category:

Authorization Bypass

CWE:

CWE-285

Impact:

Privilege Escalation and Data Integrity Compromise

Severity:

HIGH RISK

(8.1)

CVSS Version:

3.1

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Ask AI for summary of CodeAnt

Authorization Bypass on Signature Endpoint (CWE-285) in OpenEMR Patient Portal

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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