CVE-2025-54117 NamelessMC allows Stored Cross-Site Scripting (XSS) in dashboard text editor

Critical 9.1 Published 18 Aug 2025 Updated 18 Aug 2025

Authenticated attackers can inject arbitrary scripts via the dashboard text editor in NamelessMC, potentially leading to code execution or account takeover.

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-2025-54117?

CVE-2025-54117 is a critical cross-site scripting vulnerability in NamelessMC Nameless, published on 18 Aug 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

NamelessMC is a free, easy to use & powerful website software for Minecraft servers. Cross-site scripting (XSS) vulnerability in NamelessMC before 2.2.3 allows remote authenticated attackers to inject arbitrary web script or HTML via the dashboard text editor component. This vulnerability is fixed in 2.2.4.

Weakness: CWE-80, CWE-79

Which versions are affected by CVE-2025-54117?

It affects 1 product.

Products include Namelessmc Nameless.

How do I fix CVE-2025-54117?

No fix has been published for CVE-2025-54117 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-2025-54117 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-54117 exists.

Sources

Also known as GHSA-gp3j-j84w-vqxx.