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CVE-2026-33348· NVD / CVE Program· CNA GitHub_M

OpenEMR has Stored XSS in patient encounter Eye Exam form $CHRONIC2 and $CHRONIC3

OpenEMR is a free and open source electronic health records and medical practice management application. Users with the `Notes - my encounters` role can fill Eye Exam forms in patient encounters. The answers to the form are displayed on the encounter page and in the visit history for the users with the same role. Versions prior to 8.0.0.3 have a stored cross-site scripting (XSS) vulnerability in the function to display the form answers, allowing any authenticated attacker with the specific role to insert arbitrary JavaScript into the system by entering malicious payloads to the form answers. The JavaScript code is later executed by any user with the form role when viewing the form answers in the patient encounter pages or visit history. Version 8.0.0.3 contains a patch.

MediumCVSS 5.4 · v3.1—No exploit No fix recorded
Published
Mar 25, 2026
Updated
Jun 17, 2026
EPSS
1.0% · 60th percentile
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Action score

21

Monitor

Low priority for now.

CVSS
21 / 40 · 5.4 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.0%

CISA SSVC decision

Exploitation
proof of concept
Automatable
no
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
5.4
CNA · GitHub_M
8.7
3.3 point gap

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for the hundreds of thousands of vulnerabilities in the database; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

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Affected systems

VendorProduct
open-emropenemr

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • open-emr openemrbefore 8.0.0.3

Versions reported by the vendor

Affected version ranges reported by the assigning authority (GitHub_M). Independent of NVD's CPE analysis and usually ahead of it.

  • openemr openemr

    • < 8.0.0.3affected

Same product

open-emr: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-19364OpenEMR 5.0.1 allows an authenticated attacker to upload and execute malicious PHP scripts through /controller.php.
    56Plan
  • CVE-2019-14530An issue was discovered in custom/ajax_download.php in OpenEMR before 5.0.2 via the fileName parameter.
    55Plan
  • CVE-2020-36243The Patient Portal of OpenEMR 5.0.2.1 is affected by a Command Injection vulnerability in /interface/main/backup.php.
    54Plan
  • CVE-2023-2948Cross-site Scripting (XSS) - Generic in openemr/openemr
    53Plan
  • CVE-2022-2733Cross-site Scripting (XSS) - Reflected in openemr/openemr
    53Plan
  • CVE-2018-15153OS command injection occurring in versions of OpenEMR before 5.0.1.4 allows a remote authenticated attacker to execute arbitrary commands by
    53Plan

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days+1% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

  • CVE-2026-3211814 days apartOpenEMR has Stored XSS in Graphical Pain Map legend via unescaped annotation text
    36Monitor
  • CVE-2026-332996 days apartOpenEMR has Stored XSS in patient encounter Eye Exam form answers
    34Monitor
  • CVE-2026-333466 days apartOpenEMR has stored XSS in portal_payment.php via Unescaped table_args
    34Monitor
  • CVE-2025-6749129 days apartOpenEMR has Stored XSS in ub04 helper
    34Monitor
  • CVE-2026-4651876 days apartOpenEMR: Stored XSS in prescription CSS/HTML print view via patient demographics
    34Monitor
  • CVE-2025-43860306 days apartOpemEMR Vulnerable to Stored XSS Attack in the Additional Address Section of Patient Demographics
    34Monitor

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • A user must open a link or visit a page.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
low · data can be read
Integrity
low · data or configuration can be modified
Availability
none

Impact can extend beyond the vulnerable component (scope changes).

Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
Required
Scope
Changed
Confidentiality impact
Low
Integrity impact
Low
Availability impact
None

Weakness class (CWE)

CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

nvd-primary

Root cause

User content is inserted into the page as HTML. The browser interprets the content as code rather than data.

The bug in code

The whole CWE-79 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
commentEl.innerHTML = comment.body;

Fixed

ts
commentEl.textContent = comment.body;

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records