CVE-2016-20023 Path traversal in CKFinder
Authenticated attackers can download arbitrary server files by providing correct paths in CKFinder for ASP.NET.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2016-20023?
CVE-2016-20023 is a medium-severity path traversal vulnerability in CKSource CKFinder, published on 5 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
In CKSource CKFinder before 2.5.0.1 for ASP.NET, authenticated users could download any file from the server if the correct path to a file was provided.
Which versions are affected by CVE-2016-20023?
It affects 1 product.
Products include Cksource Ckfinder.
How do I fix CVE-2016-20023?
No fix has been published for CVE-2016-20023 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2016-20023 being exploited?
There is no known exploitation of CVE-2016-20023 in the wild and no public exploit code.
Other vulnerabilities in CKSource CKFinder
Sources
Also known as GHSA-fv5g-wf76-67g3.