Is this vulnerability remotely exploitable over the internet?

Yes, but exploitation still requires authenticated access. An attacker must have a user account with the ability to create or modify Eye Exam encounter forms and then trigger PDF generation; from there, the server performs the forged requests on behalf of that user's input.

What level of access does an attacker need to exploit this issue?

The attacker must be logged in with at least the `Notes - my encounters` role (or equivalent permissions) that allow filling Eye Exam forms and invoking the print-to-PDF functionality. No direct server or administrative access is required.

What is the safest general fix pattern for developers?

The most robust approach is to ensure that user-supplied form data is never interpreted as raw HTML in the PDF pipeline. Use templating mechanisms that escape all variables by default, add HTML sanitization for any intentionally rich fields, and prevent resource-loading constructs from being user-controlled.

Severity:

HIGH RISK

(7.6)

Out-of-Band Server-Side Request Forgery (CWE-918) in OpenEMR Eye Exam PDF Generation

CVE-2026-33321

Published:

Mar 19, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-918

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

Unauthorized Access to Internal Resources via SSRF

May 6, 2026

CWE-863

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Privilege Escalation via Bypassed Access Control

May 6, 2026

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Server-Side Request Forgery to Internal and External Resources

Severity:

HIGH RISK

(7.6)

CVSS Version:

3.1

Vulnerability Type

Category:

Server-Side Request Forgery (SSRF)

CWE:

CWE-918

Impact:

Server-Side Request Forgery to Internal and External Resources

Severity:

HIGH RISK

(7.6)

CVSS Version:

3.1

Catch This CVE While Code Is Being Written

Detect vulnerable code directly in pull requests, so CVEs are fixed before merge.

Get Started

Ship clean & secure code faster

Start Free Trial

Get Pentest Report

Ship clean & secure code faster

Start Free Trial

Get Pentest Report

Ship clean & secure code faster

Start Free Trial

Get Pentest Report

CodeAnt AI is an offensive and defensive security platform.

Defensive + offensive security.

From first line of code to a pentest
that knows every line of it.

SOC 2 Type II certified | CodeAnt AI is independently audited and compliant with SOC 2 Type II security standards

Ask AI for summary of CodeAnt

Defensive + offensive security.

From first line of code to a pentest
that knows every line of it.

Ask AI for summary of CodeAnt

Defensive + offensive security.

From first line of code to a pentest
that knows every line of it.

Ask AI for summary of CodeAnt

Out-of-Band Server-Side Request Forgery (CWE-918) in OpenEMR Eye Exam PDF Generation

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(8.6)

Server-Side Request Forgery (CWE-918) in OpenClaw Zalo Plugin sendPhoto

HIGH RISK

HIGH

(8.8)

Authorization Bypass (CWE-863) in OpenClaw Matrix Room Control Commands

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

Product

Compare

Company

Developers

Legal

Product

Compare

Company

Developers

Legal

Product

Compare

Company

Developers

Legal