CVE-2025-3977 iteachyou Dreamer CMS Attachment download improper authorization

Medium 5.3 Published 27 Apr 2025 Updated 28 Apr 2025

Attackers can bypass authorization to download attachments via the ID parameter in Dreamer CMS, exposing sensitive files.

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-2025-3977?

CVE-2025-3977 is a medium-severity missing authorization vulnerability in iteachyou Dreamer CMS, published on 27 Apr 2025. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

A vulnerability was found in iteachyou Dreamer CMS up to 4.1.3. It has been declared as problematic. Affected by this vulnerability is an unknown functionality of the file /admin/attachment/download of the component Attachment Handler. The manipulation of the argument ID leads to improper authorization. The attack can be launched remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

Weakness: CWE-862, CWE-285, CWE-266

Which versions are affected by CVE-2025-3977?

It affects 1 product.

Products include Iteachyou Dreamer Cms.

How do I fix CVE-2025-3977?

No fix has been published for CVE-2025-3977 yet. Limit exposure of the affected software until one is available.

Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.

Is CVE-2025-3977 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-3977 exists.

Sources

Also known as GHSA-77gx-3fxf-6gxj.