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CVE-2026-67610— OpenEMR 8.2.0 OAuth2 Dynamic Client Registration Unauthorized FHIR Access

Quick assessment

Affected
openemr openemr
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

openemr是OpenEMR组织开源的一个支持文档管理与企业应用场景的医疗信息管理平台。 OpenEMR 8.2.0及之前版本存在授权问题漏洞，该漏洞源于OAuth2动态客户端注册端点身份验证不当，可能导致未经身份验证的攻击者通过jwks字段提供自生成的RSA密钥对注册恶意客户端，经管理员批准后获取访问令牌，从而读取系统中所有患者的FHIR资源。

CVSS 8.1 · High EPSS 0.48% · P39

Affected Version Matrix 1

VendorProduct Version RangeStatus
openemr openemr ≤ 8.2.0 affected
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I. Basic Information for CVE-2026-67610

Vulnerability Information
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Vulnerability Title
OpenEMR 8.2.0 OAuth2 Dynamic Client Registration Unauthorized FHIR Access
Source: CVE Program / CVE List V5
Vulnerability Description
OpenEMR through 8.2.0 contains an improper authentication vulnerability in the OAuth2 dynamic client registration endpoint that allows unauthenticated attackers to register a malicious client with system-level FHIR scopes by supplying a self-generated RSA keypair via the jwks field. Once an administrator approves the registered client, attackers can use the client_credentials grant with a self-signed JWT assertion to obtain access tokens granting read access to all FHIR resources across all patients in the system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
OpenEMR 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
openemr是OpenEMR组织开源的一个支持文档管理与企业应用场景的医疗信息管理平台。 OpenEMR 8.2.0及之前版本存在授权问题漏洞，该漏洞源于OAuth2动态客户端注册端点身份验证不当，可能导致未经身份验证的攻击者通过jwks字段提供自生成的RSA密钥对注册恶意客户端，经管理员批准后获取访问令牌，从而读取系统中所有患者的FHIR资源。
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

Vendor Product Affected Versions CPE Subscribe
openemr openemr 0 ~ 8.2.0 -

II. Public POCs for CVE-2026-67610

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III. Intelligence Information for CVE-2026-67610

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Vendor Advisories for CVE-2026-67610 (1)

Security Blog Posts for CVE-2026-67610 (1)

Same Patch Batch · openemr · 2026-08-03 · 5 CVEs total

CVE-2026-39932 9.1 CRITICAL OpenEMR 8.2.0 Remote Code Execution via CategoryTree eval() Injection
CVE-2026-67611 8.1 HIGH OpenEMR 8.2.0 OAuth2 Password Grant Authentication Bypass via SMART Configuration
CVE-2026-39931 7.2 HIGH OpenEMR Authenticated SQL Injection via backup.php Import Feature
CVE-2026-67612 4.8 MEDIUM OpenEMR 8.2.0 Stored XSS via import_template.php Template Management

IV. Related Vulnerabilities

Same product: openemr
Same vendor: openemr
Same weakness: CWE-306

V. Comments for CVE-2026-67610

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