OpenEMR up to 7.x MedEx Callback Endpoint callback_key improper authentication

CVSS Meta Temp Score
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CTI Interest Score
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8.9$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in OpenEMR up to 7.x. The impacted element is an unknown function of the component MedEx Callback Endpoint. The manipulation of the argument callback_key results in improper authentication. This vulnerability is known as CVE-2026-24898. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in OpenEMR up to 7.x. It has been classified as critical. Affected is some unknown functionality of the component MedEx Callback Endpoint. The manipulation of the argument callback_key with an unknown input leads to a improper authentication vulnerability. CWE is classifying the issue as CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0, an unauthenticated token disclosure vulnerability in the MedEx callback endpoint allows any unauthenticated visitor to obtain the practice's MedEx API tokens, leading to complete third-party service compromise, PHI exfiltration, unauthorized actions on the MedEx platform, and HIPAA violations. The vulnerability exists because the endpoint bypasses authentication ($ignoreAuth = true) and performs a MedEx login whenever $_POST['callback_key'] is provided, returning the full JSON response including sensitive API tokens. This vulnerability is fixed in 8.0.0.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-24898 since 01/27/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

Upgrading to version 8.0.0 eliminates this vulnerability. Applying the patch 8e4de59ab58222f13abc4e4040128737d857db9c is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

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Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.0
VulDB Meta Temp Score: 8.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔒

CNA Base Score: 10.0
CNA Vector (GitHub_M): 🔒

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authentication
CWE: CWE-287
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenEMR 8.0.0
Patch: 8e4de59ab58222f13abc4e4040128737d857db9c

Timelineinfo

01/27/2026 CVE reserved
03/04/2026 +36 days Advisory disclosed
03/04/2026 +0 days VulDB entry created
03/04/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-qwff-3mw7-7rc7
Status: Confirmed

CVE: CVE-2026-24898 (🔒)
GCVE (CVE): GCVE-0-2026-24898
GCVE (VulDB): GCVE-100-348630

Entryinfo

Created: 03/04/2026 04:34
Updated: 03/04/2026 23:34
Changes: 03/04/2026 04:34 (68), 03/04/2026 23:34 (11)
Complete: 🔍
Cache ID: 216::103

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