CVE-2026-72557 Cockpit CMS Cockpit CMS - Unrestricted File Upload
Authenticated users can upload PHP webshells to execute arbitrary commands due to default wildcard upload settings.
- 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-2026-72557?
CVE-2026-72557 is a high-severity vulnerability in Cockpit CMS, published on 11 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
An unrestricted file upload vulnerability in Cockpit CMS 2.6.0 allows authenticated users to upload files of any extension including PHP scripts via the asset upload endpoint. The allowed_uploads configuration defaults to wildcard (*) and uploaded files are stored in a web-accessible directory. An attacker with any authenticated account can upload a PHP webshell and execute arbitrary OS commands on the server.
Weakness: CWE-434
Which versions are affected by CVE-2026-72557?
How do I fix CVE-2026-72557?
No fix has been published for CVE-2026-72557 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-72557 being exploited?
There is no known exploitation of CVE-2026-72557 in the wild and no public exploit code.
Sources
Also known as GHSA-8gxj-mv75-3mrm.