CVE-2026-126450 json
OpenEMR before 8.5.0 Stored XSS via Patient External ID in Prescriptions
published 18d ago modified 2d ago also EUVD-2026-124980 , GHSA-w2f7-289j-92pp
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
- 5.0
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.2%
- EPSS 0.2% chance of exploitation in 30 days, percentile 13%
- public exploits
- 0
- none known
Summary
OpenEMR before 8.5.0 contains a stored cross-site scripting vulnerability that allows authenticated users to inject scripts by placing payloads in the patient External ID field. The payload executes when other users open the patient's prescriptions via View Printable Version (HTML), running script in their browser sessions.
Patch / fix
- openemr openemr 8.5.0
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Check with FencerExploit prediction
0.22% chance of exploitation in the next 30 days, higher than 13% of all scored CVEs (FIRST EPSS, 2026-11-14).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N |
| CNA | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/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 | 3.1 | 5.0 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:N/A:N |
Affected products
- openemr openemr
Classification
- Weakness
-
- CWE-80 Improper Neutralization of Script-Related HTML Tags in a Web Page
References
-
github.com
/openemr/openemr/security/advisories/GHSA-w2f7-289j-92pp
vendor-advisory, advisory
-
vulncheck.com
/advisories/openemr-before-8.5.0-stored-xss-via-patient-external-id-in-prescriptions
third-party-advisory
Sources
- CVE List CVE-2026-126450
- NVD CVE-2026-126450
- Maintainer advisory GHSA-w2f7-289j-92pp
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.