CVE-2019-13493 Cross-site scripting in n/a
An authenticated user can inject arbitrary JavaScript via file extension parameters in the Media Library, leading to persistent XSS.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2019-13493?
CVE-2019-13493 is a medium-severity cross-site scripting vulnerability in n/a, published on 17 Jul 2019. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
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.
Weakness: CWE-79
Which versions are affected by CVE-2019-13493?
It affects 1 product.
Products include Sitecore Experience Platform.
How do I fix CVE-2019-13493?
No fix has been published for CVE-2019-13493 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2019-13493 being exploited?
There is no known exploitation of CVE-2019-13493 in the wild and no public exploit code.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in n/a
Sources
Also known as GHSA-x9jp-5rg5-vc76.