CVE-2025-22142: nameless XSS — Exploit & Fix

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.

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CVSS v3.1 Score

5.4

MEDIUM

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
namelessmc	nameless	< 2.1.3

References

Advisories & Patches

https://github.com/NamelessMC/Nameless/security/advisories/GHSA-9q22-w64p-g8qm https://github.com/NamelessMC/Nameless/security/advisories/GHSA-9q22-w64p-g8qm

Exploits

https://github.com/NamelessMC/Nameless/security/advisories/GHSA-9q22-w64p-g8qm https://github.com/NamelessMC/Nameless/security/advisories/GHSA-9q22-w64p-g8qm

Other References

https://github.com/NamelessMC/Nameless/releases/tag/v2.1.3

Frequently Asked Questions

What is CVE-2025-22142? +

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. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-22142? +

CVE-2025-22142 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-22142? +

CVE-2025-22142 affects products from namelessmc, specifically: nameless. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-22142? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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