Is CVE-2026-72557 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-72557 being exploited in the wild.

How severe is CVE-2026-72557?

High severity, with a CVSS score of 8.8, published 11 August 2026.

Is there a fix for CVE-2026-72557?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-72557 attacked?

It is attacked over the network.

Am I affected by CVE-2026-72557?

Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-72557: Cockpit CMS unrestricted file upload vulnerability

CVE-2026-72557 · Severity: high · CVSS 8.8 · Published 2026-08-11

Cockpit CMS is a content management platform used to manage website assets and content. A vulnerability in version 2.6.0 allows any authenticated user to upload files of any type, including executable PHP scripts, to a web-accessible location. An attacker with valid login credentials can exploit this to upload a malicious script and execute arbitrary commands on the server, potentially leading to complete system compromise.

Quick answers

Is CVE-2026-72557 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-72557 being exploited in the wild.
How severe is CVE-2026-72557?: High severity, with a CVSS score of 8.8, published 11 August 2026.
Which products and versions are affected?: Cockpit-HQ Cockpit 2.6.0.
Is there a fix for CVE-2026-72557?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-72557 attacked?: It is attacked over the network.
Am I affected by CVE-2026-72557?: Check whether anything you run is named in the advisory. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

This is an unrestricted file upload vulnerability in the asset upload endpoint of Cockpit CMS 2.6.0. The root cause is that the allowed_uploads configuration defaults to a wildcard (*) with no validation of file extensions or MIME types, and uploaded files are stored in a publicly accessible directory. An authenticated attacker can upload a PHP webshell via the asset upload mechanism and then access it through the web server to execute arbitrary OS commands. Authentication is required to exploit this vulnerability; however, this includes any authenticated user account, not just administrative accounts. Patches or version updates to restrict file uploads should be applied.

Affected products

Cockpit-HQ Cockpit 2.6.0

Timeline

2026-08-11: disclosed

References

https://github.com/Cockpit-HQ/Cockpit

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