CVE-2025-22142: Cross-site Scripting in NamelessMC

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-01-13 · updated 2026-06-17
Weakness: CWE-79

Description

NamelessMC is a free, easy to use & powerful website software for Minecraft servers. In affected versions an admin can add the ability to have users fill out an additional field and users can inject javascript code into it that would be activated once a staffer visits the user's profile on staff panel. As a result an attacker can execute javascript code on the staffer's computer. This issue has been addressed in version 2.1.3 and all users are advised to upgrade. There are no known workarounds for this vulnerability.

Affected products

NamelessMC Nameless: before 2.1.3 — fixed in 2.1.3

How to fix

Upgrade to a fixed version: NamelessMC Nameless 2.1.3. Check the vendor advisory for mitigations.

References

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