Public proof of conceptFix available

CVE-2026-33346

Q: Is CVE-2026-33346 actively exploited?

A proof-of-concept exploit exists for CVE-2026-33346, but active exploitation has not been confirmed at this time.

Q: What is the CVSS score for CVE-2026-33346?

CVE-2026-33346 has a CVSS v3 base score of 8.7 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

A public proof of concept exists; no exploitation attested.

Published2026-03-19
Fixed in8.0.0.2
WeaknessCWE-79

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

Description

OpenEMR is a free and open source electronic health records and medical practice management application. Prior to 8.0.0.2, a stored cross-site scripting (XSS) vulnerability in the patient portal payment flow allows a patient portal user to persist arbitrary JavaScript that executes in the browser of a staff member who reviews the payment submission. The payload is stored via `portal/lib/paylib.php` and rendered without escaping in `portal/portal_payment.php`. Version 8.0.0.2 fixes the issue.

Timeline

dates in UTC

2026-03-1921:17CVE publishedNVD

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2026-33346?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2026-33346?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Open-emr openemr

Branch	Affected	Fixed in	Source
8.0	< 8.0.0.2	8.0.0.2	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Update Open-emr openemr to 8.0.0.2

Advisories and patches

github.comPatch
github.comVendor Advisory

Detection

Nuclei template: none so far
Exploit-DB: no entry
Proof-of-concept repositories: none listed

Sources

NVDCVE recordread 2026-10-23
CISA-ADPSSVC decisionpoc2026-03-20
OpenCVESSVC decisionpoc—
CNACVSS 3.18.7read 2026-10-23
CNAweakness (CWE)CWE-79read 2026-10-23
FIRST EPSSEPSS score1.1 %2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
Published: 2026-03-19
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2026-33346?

Is CVE-2026-33346 actively exploited?

A proof-of-concept exploit exists for CVE-2026-33346, but active exploitation has not been confirmed at this time.

What is the CVSS score for CVE-2026-33346?

CVE-2026-33346 has a CVSS v3 base score of 8.7 (HIGH severity), with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N.

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