CVE-2025-2583 SimpleMachines SMF ManageNews.php cross site scripting

Medium 5.1 Published 21 Mar 2025 Updated 21 Apr 2025

Remote attackers can inject malicious scripts via the subject or message fields in ManageNews.php, potentially compromising user sessions.

Exploited in the wild: Not known
Login needed: Any signed-in user
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: None listed

What is CVE-2025-2583?

CVE-2025-2583 is a medium-severity cross-site scripting vulnerability in SimpleMachines SMF, published on 21 Mar 2025. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.

Official description

A vulnerability was found in SimpleMachines SMF 2.1.4. It has been classified as problematic. This affects an unknown part of the file ManageNews.php. The manipulation of the argument subject/message leads to cross site scripting. It is possible to initiate the attack remotely. The exploit has been disclosed to the public and may be used. The real existence of this vulnerability is still doubted at the moment. The vendor does not declare this issue a security vulnerability due to authentication requirements before being able to access any feature in the software that allows file modification.

Weakness: CWE-94, CWE-79

Which versions are affected by CVE-2025-2583?

It affects 1 product.

Products include Simplemachines Simple Machines Forum.

How do I fix CVE-2025-2583?

No fix has been published for CVE-2025-2583 yet. Limit exposure of the affected software until one is available.

Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.

Is CVE-2025-2583 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-2583 exists.

Sources

Also known as GHSA-62c5-9j7v-qj26.