What is CVE-2018-1000020?

CVE-2018-1000020 is a medium-severity vulnerability in Open-Emr Openemr, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-02-09.

How severe is CVE-2018-1000020?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Open-Emr Openemr

CVE-2018-1000020

OpenEMR version 5.0.0 contains a Cross Site Scripting (XSS) vulnerability in open-flash-chart.swf and _posteddata.php that can result in . This vulnerability appears to have been fixed in 5.0.0 Patch 2 or higher.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-02-09 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.007 (50.2th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: 0.000

Affected products

Open-Emr Openemr — versions 5.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.sec-consult.com/en/blog/advisories/os-command-injection-reflected-cross-sit… (Exploit, Vendor Advisory)
www.open-emr.org/wiki/index.php/OpenEMR_Patches (Patch, Release Notes)

Frequently asked questions

What is CVE-2018-1000020?: CVE-2018-1000020 is a medium-severity vulnerability in Open-Emr Openemr, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-02-09.
How severe is CVE-2018-1000020?: Medium severity. CVSS v3 base score is 6.1 out of 10.