HOMEVULNERABILITIESCVE-2026-33321
HIGH

CVE-2026-33321

CWE-918Published: March 19, 2026· Updated: Mar 20, 2026

7.6
CVSS v3.1
EPSS:0.04%probability of exploitation in 30 daysPercentile:11.3th

Official Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0.2, users with the `Notes - my encounters` role can fill Eye Exam forms in patient encounters. The answers to the form can be printed out in PDF form. An Out-of-Band Server-Side Request Forgery (OOB SSRF) vulnerability was identified in the PDF creation function where the form answers are parsed as unescaped HTML, allowing an attacker to forge requests from the server made to external or internal resources. Version 8.0.0.2 fixes the issue.

NVD Source

Technical Analysis

CVE-2026-33321 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 7.6.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityLow
AvailabilityLow
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L

Affected Vendors & Products

open-emr1 product
openemr
Source: NVD CPE · 1 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

PATCHhttps://github.com/openemr/openemr/commit/dccc962f06bdf6105ca85c277915167caf3e7c28
ADVISORYhttps://github.com/openemr/openemr/security/advisories/GHSA-5pc3-2crw-96rv

All References (2)

→
https://github.com/openemr/openemr/commit/dccc962f06bdf6105ca85c277915167caf3e7c28Patch
→
https://github.com/openemr/openemr/security/advisories/GHSA-5pc3-2crw-96rvExploit · Vendor Advisory

Quick Facts

CVE IDCVE-2026-33321
CVSS Score7.6 / 10
SeverityHIGH
WeaknessCWE-918
CISA KEVNo
EPSS (30d)0.04%
Affected1 vendor
PublishedMar 19, 2026

Related CVEs (CWE-918)

CVE-2026-2053
10.0
CVE-2026-32186
10.0
CVE-2026-13773
10.0
CVE-2026-26150
10.0
CVE-2026-35431
10.0
CVE-2026-47938
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2026-33321 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2026-33321·NVD