CVE-2026-126420 json
OpenEMR before 8.5.0 Missing Authorization in FaxSMS utility.php Patient Creation
published 18d ago modified yesterday also EUVD-2026-125023 , GHSA-ppg9-2f9f-chc4
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 28%
- public exploits
- 0
- none known
Summary
OpenEMR before 8.5.0 contains a missing authorization vulnerability in the FaxSMS module's utility.php that allows read-only demographics users to create patient charts. Attackers can submit the form_create request with chosen identity fields to create fictitious or duplicate patients with employer, history, and insurance records.
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
0.34% chance of exploitation in the next 30 days, higher than 28% of all scored CVEs (FIRST EPSS, 2026-11-14).
Exploits and checks
- github.com https://github.com/openemr/openemr/security/advisories/GHSA-ppg9-2f9f-chc4 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:N/VI:H/VA:L/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:N/I:H/A:L |
| CNA | 4.0 | 6.0 | CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:H/VA:L/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-862 Missing Authorization
References
-
github.com
/openemr/openemr/security/advisories/GHSA-ppg9-2f9f-chc4
vendor-advisory, exploit, advisory
-
vulncheck.com
/advisories/openemr-before-8.5.0-missing-authorization-in-faxsms-utility-php-patient-creation
third-party-advisory
Sources
- CVE List CVE-2026-126420
- NVD CVE-2026-126420
- Maintainer advisory GHSA-ppg9-2f9f-chc4
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.