What is CVE-2018-11628?

CVE-2018-11628 is a medium-severity vulnerability in Emssoftware Ems Master Calendar, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-01.

How severe is CVE-2018-11628?

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

XSS in Emssoftware Ems Master Calendar

CVE-2018-11628

Data input into EMS Master Calendar before 8.0.0.201805210 via URL parameters is not properly sanitized, allowing malicious attackers to send a crafted URL for XSS.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-06-01 · 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: 0.035 (88.7th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.035 · newest: 0.035 · change: 0.000

Affected products

Emssoftware Ems Master Calendar

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

gist.github.com/barrett092/c70752ca6960b8b9616a03006f291a28 (Third Party Advisory)
docs.emssoftware.com/Content/V44.1_ReleaseNotes.htm (Release Notes)
www.securityfocus.com/bid/104428 (VDB Entry, Third Party Advisory, vdb-entry)
www.exploit-db.com/exploits/44831/ (Exploit, VDB Entry, Third Party Advisory, exploit)

Frequently asked questions

What is CVE-2018-11628?: CVE-2018-11628 is a medium-severity vulnerability in Emssoftware Ems Master Calendar, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2018-06-01.
How severe is CVE-2018-11628?: Medium severity. CVSS v3 base score is 6.1 out of 10.