CVE-2026-126440 json
OpenEMR before 8.5.0 Document ACL Bypass via Care Coordination Import
published 18d ago modified yesterday also EUVD-2026-125003 , GHSA-mmpv-ph5x-x4m3
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository openemr/openemr. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 5.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 20%
- public exploits
- 0
- none known
Summary
OpenEMR before 8.5.0 contains a missing authorization flaw in the Care Coordination CCDA and CCR import controllers, which move a document named by the document_id parameter into the import category without checking access to the source document. Authenticated non-administrators with Care Coordination access can recategorize protected patient documents and then download them through normal ACL-checked retrieval.
Patch / fix
- openemr openemr 8.5.0
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Check with FencerCISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- no
- Technical impact
- partial
- Assessed
- yesterday
Exploit prediction
0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-14).
Exploits and checks
- github.com https://github.com/openemr/openemr/security/advisories/GHSA-mmpv-ph5x-x4m3 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 5.9 | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N |
| CNA | 4.0 | 6.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/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 |
Affected products
- openemr openemr
Classification
- Weakness
-
- CWE-284 Improper Access Control
References
-
github.com
/openemr/openemr/security/advisories/GHSA-mmpv-ph5x-x4m3
vendor-advisory, exploit, advisory
-
vulncheck.com
/advisories/openemr-before-8.5.0-document-acl-bypass-via-care-coordination-import
third-party-advisory
Sources
- CVE List CVE-2026-126440
- NVD CVE-2026-126440
- Maintainer advisory GHSA-mmpv-ph5x-x4m3
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of openemr/openemr published their own advisory on GitHub. Reviewed sources take precedence over it.