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CVE-2025-30158— NamelessMC Forum iframe width/height abuse causing UI-based Denial of Service

Quick assessment

Affected
NamelessMC Nameless
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

NamelessMC是NamelessMC团队的一款免费、易于使用且功能强大的网站软件。适用于您的 Minecraft 服务器，其中包含大量功能。 NamelessMC 2.1.4及之前版本存在资源管理错误漏洞，该漏洞源于论坛允许发布无限制的iframe元素，可能导致用户界面拒绝服务攻击。

CVSS 7.1 · High EPSS 0.55% · P44

Possible ATT&CK Techniques 2 AI

T1189 · Drive-by Compromise T1508
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I. Basic Information for CVE-2025-30158

Vulnerability Information
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Vulnerability Title
NamelessMC Forum iframe width/height abuse causing UI-based Denial of Service
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
NamelessMC 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
NamelessMC是NamelessMC团队的一款免费、易于使用且功能强大的网站软件。适用于您的 Minecraft 服务器，其中包含大量功能。 NamelessMC 2.1.4及之前版本存在资源管理错误漏洞，该漏洞源于论坛允许发布无限制的iframe元素，可能导致用户界面拒绝服务攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
NamelessMC Nameless < 2.2.0 -

II. Public POCs for CVE-2025-30158

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 5923 chars
Pro+ exclusive includes:
Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
Full executable POC code
Exploit chain & mitigation
POC zip download
100+ AI POC generations per month

III. Intelligence Information for CVE-2025-30158

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Patches & Fixes for CVE-2025-30158 (1)

Vendor Advisories for CVE-2025-30158 (1)

Vendor Pages for CVE-2025-30158 (1)

Same Patch Batch · NamelessMC · 2025-04-18 · 6 CVEs total

CVE-2025-29784 7.5 HIGH NamelessMC Has Lack of Length Validation for s Parameter in GET Requests
CVE-2025-30357 7.3 HIGH NamelessMC Forum Topic Deletion Triggered by Unrelated User Deletion
CVE-2025-31118 7.1 HIGH NamelessMC Has Forum Reply Submission Time Limit Bypass
CVE-2025-31120 5.3 MEDIUM NamelessMC Vulnerable to Cookie-Based View Count Manipulation
CVE-2025-32389 NamelessMC Vulnerable to SQL Injections in /user/messaging and /panel/users/reports Pages

IV. Related Vulnerabilities

Same product: Nameless
Same vendor: NamelessMC
Same weakness: CWE-400

V. Comments for CVE-2025-30158

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