Cross-Site Scripting Vulnerability in NamelessMC Website Software
CVE-2025-54421

7.2HIGH

Key Information:

Vendor

Namelessmc

Status
Nameless
Vendor
CVE Published:
18 August 2025

What is CVE-2025-54421?

A Cross-Site Scripting (XSS) vulnerability exists in NamelessMC versions prior to 2.2.4. This flaw allows remote authenticated attackers to inject arbitrary web scripts or HTML through the 'default_keywords' parameter, potentially leading to the manipulation of web page content for users accessing the affected site. Users are advised to upgrade to version 2.2.4 or later to mitigate this risk.

Affected Version(s)

Nameless < 2.2.4

References

https://github.com/NamelessMC/Nameless/security/advisorie...
x_refsource_CONFIRM
https://github.com/NamelessMC/Nameless/commit/56d35cff9ee...
x_refsource_MISC

CVSS V3.1

Score:
7.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.
CVE-2025-54421 : Cross-Site Scripting Vulnerability in NamelessMC Website Software