CVE-2026-4542 SSCMS layerImage Endpoint LayerImageController.Submit.cs path traversal
Remote attackers can exploit a path traversal vulnerability in the SSCMS layerImage endpoint to read or modify arbitrary files on the server.
- 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-2026-4542?
CVE-2026-4542 is a medium-severity path traversal vulnerability in SSCMS, published on 22 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
A vulnerability has been found in SSCMS 4.7.0. The affected element is an unknown function of the file LayerImageController.Submit.cs of the component layerImage Endpoint. Such manipulation of the argument filePaths leads to path traversal. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.
Weakness: CWE-22
Which versions are affected by CVE-2026-4542?
How do I fix CVE-2026-4542?
No fix has been published for CVE-2026-4542 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-2026-4542 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-4542 exists.
Sources
Also known as GHSA-mwg5-3pp3-6h5w.