CVE-2026-124451
OpenEMR before 8.4.0 Authorization Bypass via checkUserHasAccessToPatient in SMART on FHIR
OpenEMR before 8.4.0 contains an authorization bypass vulnerability in its SMART on FHIR implementation because checkUserHasAccessToPatient() in BearerTokenAuthorizationStrategy.php unconditionally returns true. Authenticated users or malicious SMART apps can manipulate token launch context to bind requests to arbitrary patient UUIDs, gaining unauthorized read/write access to other patients' FHIR resources.
Fixes and workarounds
No remediation reported in collected sources.
Missing remediation information is not evidence that no patch exists.
Affected products and versions
| Product | Versions | Authority |
|---|---|---|
| openemr openemr |
≥ 0; < 8.4.0 (affected, semver) 8.4.0 (unaffected, semver) Other versions: unaffected |
CNA: VulnCheck |
Version ranges are source assertions. Check the vendor advisory and your installed configuration before determining exposure.
CVSS assessments
| Version / score | Vector | Authority |
|---|---|---|
| 4.0 / 6.0 medium |
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N | CNA: VulnCheck |
| 3.1 / 5.3 medium |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N | CNA: VulnCheck |
| 4.0 / 6.0 medium |
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X | NVD: [email protected] |
| 3.1 / 5.3 medium |
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N | NVD: [email protected] |
Exploit evidence
No exploit evidence in collected sources. This is not proof of no exploitation.
References
- https://github.com/openemr/openemr/security/advisories/GHSA-xjgw-qjm5-4mq6CNA: VulnCheck · vendor-advisory
- https://www.vulncheck.com/advisories/openemr-before-8.4.0-authorization-bypass-via-checkuserhasaccesstopatient-in-smart-on-fhirCNA: VulnCheck · third-party-advisory
- https://github.com/openemr/openemr/security/advisories/GHSA-xjgw-qjm5-4mq6[email protected]
- https://www.vulncheck.com/advisories/openemr-before-8.4.0-authorization-bypass-via-checkuserhasaccesstopatient-in-smart-on-fhir[email protected]
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