What is GHSA-h6wr-v3m9-4h99?

GHSA-h6wr-v3m9-4h99 is a security advisory published by GitHub Security Advisories with High severity. OpenEMR before 8.5.0 contains an authorization bypass vulnerability that allows OAuth2 clients to...

Which CVE IDs does GHSA-h6wr-v3m9-4h99 cover?

GHSA-h6wr-v3m9-4h99 covers the following CVE IDs: CVE-2026-126436. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-h6wr-v3m9-4h99?

GHSA-h6wr-v3m9-4h99 has a CVSS v3 base score of 7.5, published by GitHub Security Advisories.

GHSA-h6wr-v3m9-4h99HighCVSS 7.5

OpenEMR before 8.5.0 contains an authorization bypass vulnerability that allows OAuth2 clients to...

Vendor

GitHub Security Advisories

Published

November 13, 2026

Last Modified

November 13, 2026

🔗 CVE IDs covered (1)

CVE-2026-126436 →

📋 Description

OpenEMR before 8.5.0 contains an authorization bypass vulnerability that allows OAuth2 clients to use unregistered grant types because oauth_clients.grant_types is never enforced. Attackers can request tokens with grant_type=password to bypass the user consent screen, and disabled clients can redeem authorization codes using JWT client assertions.

🔗 References (4)

https://github.com/openemr/openemr/security/advisories/GHSA-qjj7-c4m9-6f92
https://nvd.nist.gov/vuln/detail/CVE-2026-126436
https://www.vulncheck.com/advisories/openemr-before-8.5.0-oauth2-grant-type-enforcement-bypass-via-token-endpoint
https://github.com/advisories/GHSA-h6wr-v3m9-4h99