Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-33303— OpenEMR Vulnerable to Stored XSS via Unescaped portal_login_username in Credential Print View

Quick assessment

Affected
openemr openemr
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenEMR是OpenEMR社区的一套开源的医疗管理系统。该系统可用于医疗实践管理、电子医疗记录、处方书写和医疗帐单申请。 OpenEMR 8.0.0.2之前版本存在跨站脚本漏洞，该漏洞源于portal_login_username未转义，可能导致存储型跨站脚本攻击。

CVSS 5.4 · Medium EPSS 0.65% · P50
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-33303

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
OpenEMR Vulnerable to Stored XSS via Unescaped portal_login_username in Credential Print View
Source: CVE Program / CVE List V5
Vulnerability Description
OpenEMR is a free and open source electronic health records and medical practice management application. Versions prior to 8.0.0.2 are vulnerable to stored cross-site scripting (XSS) via unescaped `portal_login_username` in the portal credential print view. A patient portal user can set their login username to an XSS payload, which then executes in a clinic staff member's browser when they open the "Create Portal Login" page for that patient. This crosses from the patient session context into the staff/admin session context. Version 8.0.0.2 fixes the issue.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在Web页面生成时对输入的转义处理不恰当(跨站脚本)
Source: CVE Program / CVE List V5
Vulnerability Title
OpenEMR 跨站脚本漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenEMR是OpenEMR社区的一套开源的医疗管理系统。该系统可用于医疗实践管理、电子医疗记录、处方书写和医疗帐单申请。 OpenEMR 8.0.0.2之前版本存在跨站脚本漏洞，该漏洞源于portal_login_username未转义，可能导致存储型跨站脚本攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
openemr openemr < 8.0.0.2 -

II. Public POCs for CVE-2026-33303

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-33303

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-33303 (1)

Vendor Advisories for CVE-2026-33303 (1)

Same Patch Batch · openemr · 2026-03-19 · 12 CVEs total

CVE-2026-32238 9.1 CRITICAL OpenEMR has Remote Code Execution in backup functionality
CVE-2026-33346 8.7 HIGH OpenEMR has stored XSS in portal_payment.php via Unescaped table_args
CVE-2026-25928 6.5 MEDIUM OpenEMR Vulnerable to Path Traversal When Zipping DICOM Folders
CVE-2026-25744 6.5 MEDIUM OpenEMR: POST /api/.../vital Accepts Attacker-Supplied id and Overwrites Arbitrary Vitals
CVE-2026-33304 6.5 MEDIUM OpenEMR has Authorization Bypass in Dated Reminders Log
CVE-2026-33305 5.4 MEDIUM OpenEMR has Authorization Bypass in FaxSMS AppDispatch Constructor
CVE-2026-32119 4.4 MEDIUM OpenEMR has Stored DOM XSS via SearchHighlight text-node reconstruction on Custom Report p
CVE-2026-33301 OpenEMR has arbitrary image file read via PDF generator
CVE-2026-33321 OpenEMR has Out-of-Band Server-Side Request Forgery (OOB SSRF)
CVE-2026-33299 OpenEMR has Stored XSS in patient encounter Eye Exam form answers
CVE-2026-33302 OpenEMR: zhAclCheck Ignores Explicit ACL Denies

IV. Related Vulnerabilities

Same product: openemr
Same vendor: openemr
Same weakness: CWE-79

V. Comments for CVE-2026-33303

No comments yet

Leave a comment