TI-2025-21497 Aliases CVE-2025-30158

NamelessMC Forum iframe width/height abuse causing UI-based Denial of Service

MEDIUM 64CWE-400Published 2025-04-18 · Updated 2025-04-18

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · Low · High
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.00557 46th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by NVD

Fix Fixed Nameless (NamelessMC): 2.2.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
NamelessMC	Nameless	before 2.2.0	2.2.0	Patch available	CNA

Nameless VendorNamelessMC Affected before 2.2.0 Fixed in 2.2.0 Patch available CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:namelessmc:nameless::::::::	before 2.2.0	Vulnerable	NamelessMC

cpe:2.3:a:namelessmc:nameless:*:*:*:*:*:*:*:* Versions before 2.2.0 Vulnerable ·NamelessMC

Remediation

Fix · CNA Nameless (NamelessMC) Fixed in 2.2.0

Timeline

2026-10-02 Threatist record created from CVE-2025-30158

References

TI-2025-16092 Account Takeover in NamelessMC CVSS 4.0CRITICAL 9.0
TI-2025-33960 NamelessMC allows Stored Cross-Site Scripting (XSS) in dashboard text editor CVSS 3.1CRITICAL 9.1
TI-2025-23467 NamelessMC Vulnerable to SQL Injections in /user/messaging and /panel/users/reports Pages CVSS 4.0HIGH 8.6
TI-2025-21195 NamelessMC Has Lack of Length Validation for s Parameter in GET Requests CVSS 3.1HIGH 7.5
TI-2022-02614 Session Fixation in namelessmc/nameless CVSS 3.1HIGH 8.2
TI-2025-16090 Cross-site Scripting in NamelessMC CVSS 4.0MEDIUM 6.3

See all 12 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences