CVE-2019-13493
CWE-79Published: July 17, 2019· Updated: Jun 17, 2026
Official Description
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.
Technical Analysis
CVE-2019-13493 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.
Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.
The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.
A proof-of-concept (PoC) exploit exists for CVE-2019-13493. While not yet confirmed in active campaigns, the availability of PoC code increases exploitation risk substantially.
From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.
CVSS v3.1 Vector Breakdown
Affected Vendors & Products
Exploit & PoC Resources
Official Patches & Advisories
All References (2)
Quick Facts
Related CVEs (CWE-79)
Recommended Actions
- →Apply vendor patches immediately
- →Monitor CVE-2019-13493 in threat intel feeds
- →Review IDS/IPS signatures for exploitation attempts