CVE-2025-31120 NamelessMC Vulnerable to Cookie-Based View Count Manipulation

Medium 5.3 Published Updated

An unauthenticated attacker can artificially inflate forum view counts by manipulating client-side cookies, compromising data integrity in NamelessMC.

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

What is CVE-2025-31120?

CVE-2025-31120 is a medium-severity vulnerability in NamelessMC Nameless, published on 18 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

NamelessMC is a free, easy to use & powerful website software for Minecraft servers. In version 2.1.4 and prior, an insecure view count mechanism in the forum page allows an unauthenticated attacker to artificially increase the view count. The application relies on a client-side cookie (nl-topic-[tid]) (or session variable for guests) to determine if a view should be counted. When a client does not provide the cookie, every page request increments the counter, leading to incorrect view metrics. This issue has been patched in version 2.2.0.

Weakness: CWE-565

Which versions are affected by CVE-2025-31120?

It affects 1 product.

Products include Namelessmc Nameless.

How do I fix CVE-2025-31120?

No fix has been published for CVE-2025-31120 yet. Limit exposure of the affected software until one is available.

Is CVE-2025-31120 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-31120 exists.

Sources

Also known as GHSA-8jv7-77jw-h646.

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