CVE-2025-12331 Willow CMS add unrestricted upload

Medium 5.1 Published Updated

Remote attackers can upload malicious files to Willow CMS via the admin image addition endpoint, potentially leading to code execution.

Exploited in the wild
Not known
Login needed
An administrator
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2025-12331?

CVE-2025-12331 is a medium-severity vulnerability in Willow CMS, published on 27 Oct 2025. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

A weakness has been identified in Willow CMS up to 1.4.0. Impacted is an unknown function of the file /admin/images/add. This manipulation causes unrestricted upload. Remote exploitation of the attack is possible. The exploit has been made available to the public and could be exploited.

Weakness: CWE-434, CWE-284

Which versions are affected by CVE-2025-12331?

It affects 1 product.

Products include Matthewdeaves Willow Cms.

How do I fix CVE-2025-12331?

No fix has been published for CVE-2025-12331 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-12331 being exploited?

There is no known exploitation of CVE-2025-12331 in the wild and no public exploit code.

Sources

Also known as GHSA-c78m-c7wq-r5w4.

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