CVE-2025-69906 File upload in n/a

High 8.8 Published 5 Feb 2026 Updated 6 Feb 2026

Attackers can upload malicious files to Monstra CMS via the Files Manager plugin to achieve remote 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-2025-69906?

CVE-2025-69906 is a high-severity vulnerability in n/a, published on 5 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Monstra CMS v3.0.4 contains an arbitrary file upload vulnerability in the Files Manager plugin. The application relies on blacklist-based file extension validation and stores uploaded files directly in a web-accessible directory. Under typical server configurations, this can allow an attacker to upload files that are interpreted as executable code, resulting in remote code execution.

Weakness: CWE-434

Which versions are affected by CVE-2025-69906?

It affects 1 product.

Products include Monstra Monstra Cms.

How do I fix CVE-2025-69906?

No fix has been published for CVE-2025-69906 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-69906 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-69906 exists.

Public exploit code: 1 proofs of concept on GitHub.

Sources

Also known as GHSA-gcf9-q9xj-jjx5.