CVE-2026-7044 GreenCMS index.php themeadd unrestricted upload

Medium 5.3 Published Updated

Remote attackers can upload malicious files via the themeadd function in GreenCMS, potentially leading to code execution.

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-2026-7044?

CVE-2026-7044 is a medium-severity vulnerability in GreenCMS, published on 26 Apr 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was found in GreenCMS up to 2.3. Affected is the function themeadd of the file /index.php?m=admin&c=custom&a=themeadd. The manipulation results in unrestricted upload. The attack can be launched remotely. The exploit has been made public and could be used. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-434, CWE-284

Which versions are affected by CVE-2026-7044?

How do I fix CVE-2026-7044?

No fix has been published for CVE-2026-7044 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-7044 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7044 exists.

Sources

Also known as GHSA-rfpj-c45c-hv9h.

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