OpenEMR has an Unauthenticated MedEx Token Disclosure

Description

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.

Timeline

Scores

EPSS (exploitation in 30 days)

2.4% · top 16% of all CVEs (7 Nov 2026)

CISA SSVC

Exploitation: none · Automatable: yes · Technical impact: total

The list uses the assigner's score when there is one, then CISA's, then NVD's: Critical 10.0.

Weakness

• CWE-287: Improper Authentication (opens in a new tab)All about CWE-287 and its CVEs

Affected products

• openemr · openemr

  • affected < 8.0.0

References (2)

• https://github.com/openemr/openemr/security/advisories/GHSA-qwff-3mw7-7rc7 (opens in a new tab)x_refsource_CONFIRM
• https://github.com/openemr/openemr/commit/8e4de59ab58222f13abc4e4040128737d857db9c (opens in a new tab)x_refsource_MISC

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2026-24898](https://trackcve.app/badge/CVE-2026-24898.svg)](https://trackcve.app/cve/CVE-2026-24898)

Record last updated 4 Mar 2026, 16:52 UTC.