Description

NamelessMC is a free, easy to use & powerful website software for Minecraft servers. In version 2.1.4 and prior, the forum allows users to post iframe elements inside forum topics/comments/feed with no restriction on the iframe's width and height attributes. This allows an authenticated attacker to perform a UI-based denial of service (DoS) by injecting oversized iframes that block the forum UI and disrupt normal user interactions. This issue has been patched in version 2.2.0.

Classification

CVE ID: CVE-2025-30158

CVSS Base Severity: HIGH

CVSS Base Score: 7.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H

Affected Products

Vendor: NamelessMC

Product: Nameless

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.04% (probability of being exploited)

EPSS Percentile: 13.22% (scored less or equal to compared to others)

EPSS Date: 2025-05-17 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-30158
https://github.com/NamelessMC/Nameless/security/advisories/GHSA-2prx-rgr7-hq5f
https://github.com/NamelessMC/Nameless/commit/caa42a975338a13fbc1658e8c440108f16135643
https://github.com/NamelessMC/Nameless/releases/tag/v2.2.0

Timeline