What is CVE-2019-13493?

CVE-2019-13493 is a medium-severity vulnerability in Sitecore Experience Platform, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2019-07-17.

How severe is CVE-2019-13493?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Sitecore Experience Platform

CVE-2019-13493

In Sitecore 9.0 rev 171002, Persistent XSS exists in the Media Library and File Manager. An authenticated unprivileged user can modify the uploaded file extension parameter to inject arbitrary JavaScript.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-07-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.016 (74.5th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 75th percentile — 74.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.016 · newest: 0.016 · change: 0.000

Affected products

Sitecore Experience Platform — versions 9.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

packetstormsecurity.com/files/153613/Sitecore-9.0-Rev-171002-Cross-Site-Scripti… (Exploit, VDB Entry, Third Party Advisory)

Frequently asked questions

What is CVE-2019-13493?: CVE-2019-13493 is a medium-severity vulnerability in Sitecore Experience Platform, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2019-07-17.
How severe is CVE-2019-13493?: Medium severity. CVSS v3 base score is 5.4 out of 10.