CVE-2019-5450 Cross-site scripting in com.nextcloud.client
Attackers can inject HTML into directory names to alter the app's header bar styling, potentially misleading users.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-5450?
CVE-2019-5450 is a medium-severity cross-site scripting vulnerability in com.nextcloud.client, published on 30 Jul 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Improper sanitization of HTML in directory names in the Nextcloud Android app prior to version 3.7.0 allowed to style the directory name in the header bar when using basic HTML.
Which versions are affected by CVE-2019-5450?
It affects 1 product.
Products include Nextcloud Nextcloud.
How do I fix CVE-2019-5450?
No fix has been published for CVE-2019-5450 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-2019-5450 being exploited?
There is no known exploitation of CVE-2019-5450 in the wild and no public exploit code.
Other vulnerabilities in com.nextcloud.client
- CVE-2019-5454 SQL injection in com.nextcloud.client
- CVE-2021-43863 SQL Injection in FileContentProvider (GHSL-2021-1007)
- CVE-2019-5455 Auth bypass in com.nextcloud.client
- CVE-2021-22905 Information disclosure in Nextcloud Android App (com.nextcloud.client)
- CVE-2021-22912 Information disclosure in Nextcloud iOS app (it.twsweb.Nextcloud)
Sources
Also known as GHSA-x6fc-pmf5-67rv.