CVE-2025-54421

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

CVSS v3.1

5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

CVSS v3.1

7.2 HIGHCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS

0.39% chance of exploitation in the next 30 days, 32th percentile

Published

2025-08-18

Proof-of-concept exploits (1)

• NamelessMC/Nameless/security/advisories/GHSA-f5rm-w4mx-q7rx

References

• CVE Record
• NVD entry

Related

• CVE-2025-22142
• CVE-2025-22144
• CVE-2025-29784
• CVE-2025-30158
• CVE-2025-31118
• CVE-2025-31120