How severe is CVE-2026-24898?

CVE-2026-24898 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2026-24898 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-24898?

CVE-2026-24898 affects Open-emr Openemr. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-24898?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

Does CVE-2026-24898 have an EU (EUVD) identifier?

Yes. CVE-2026-24898 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9328.

When was CVE-2026-24898 published?

CVE-2026-24898 was published on 2026-03-03 and last updated on 2026-06-17.

CVE-2026-24898

CVE-2026-24898 is a critical-severity vulnerability in Open-emr Openemr with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Critical (CVSS 3.x base score 10.0)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-9328
Weakness: CWE-287
Affected product: Open-emr Openemr
Published: 2026-03-03
Last modified: 2026-06-17

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.

Frequently asked questions

What is CVE-2026-24898?: 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.
How severe is CVE-2026-24898?: CVE-2026-24898 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-24898 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-24898?: CVE-2026-24898 affects Open-emr Openemr. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-24898?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-24898 have an EU (EUVD) identifier?: Yes. CVE-2026-24898 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-9328.
When was CVE-2026-24898 published?: CVE-2026-24898 was published on 2026-03-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:open-emr:openemr:*:*:*:*:*:*:*:*

More vulnerabilities in Open-emr Openemr

CVE-2026-24848 — Critical (CVSS 9.9): OpenEMR is a free and open source electronic health records and medical practice management application. In 7.0.4 and…
CVE-2026-24908 — Critical (CVSS 9.9): OpenEMR is a free and open source electronic health records and medical practice management application. Prior to…
CVE-2026-24849 — Critical (CVSS 9.9): OpenEMR is a free and open source electronic health records and medical practice management application. Prior to…
CVE-2024-22611 — Critical (CVSS 9.8): OpenEMR 7.0.2 is vulnerable to SQL Injection via \openemr\library\classes\Pharmacy.class.php,…
CVE-2024-37734 — Critical (CVSS 9.8): An issue in OpenEMR 7.0.2 allows a remote attacker to escalate privileges viaa crafted POST request using the noteid…
CVE-2020-13567 — Critical (CVSS 9.8): Multiple SQL injection vulnerabilities exist in phpGACL 3.3.7. A specially crafted HTTP request can lead to a SQL…

All CVEs affecting Open-emr Openemr →

Other CWE-287 (Improper Authentication) vulnerabilities

CVE-2026-20317 — Critical (CVSS 10.0): As part of Cisco's ongoing commitment to proactive security and product quality, the Cisco Secure Workload engineering…
CVE-2026-19977 — Critical (CVSS 10.0): A vulnerability was detected in EFM ipTIME A3004T 14.19.0. The affected element is the function…
CVE-2026-59500 — Critical (CVSS 10.0): CWE-287: Improper Authentication
CVE-2024-27253 — Critical (CVSS 10.0): IBM DOORS Next 7.0.3 through 7.0.3 Interim Fix 018 could allow an authenticated user to bypass security logic to…
CVE-2026-56162 — Critical (CVSS 10.0): Improper authentication in Azure SQL Database allows an unauthorized attacker to elevate privileges over a network.
CVE-2026-62825 — Critical (CVSS 10.0): Improper authentication in Azure Key Vault allows an unauthorized attacker to elevate privileges over a network.

Browse all CWE-287 (Improper Authentication) vulnerabilities →