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

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2025-08-18 · updated 2026-06-17
Weakness: CWE-79

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.

Affected products

NamelessMC Nameless: before 2.2.4 — fixed in 2.2.4

How to fix

Upgrade to a fixed version: NamelessMC Nameless 2.2.4. Check the vendor advisory for mitigations.

References

https://github.com/NamelessMC/Nameless/commit/0e77706b2966dd9f2e30502126d6581ecc001f09
https://github.com/NamelessMC/Nameless/security/advisories/GHSA-gp3j-j84w-vqxx

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