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TI-2026-27574 Aliases CVE-2026-35443

NamelessMC: Forum reactions bypass the "view own topics only" restriction

Priority MEDIUM 57CWE-862Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
Low · Low · None
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

NamelessMC is website software for Minecraft servers. In version 2.2.4, `modules/Forum/classes/ForumPostReactionContext.php` only verifies that the caller can view the forum, but it does not re-enforce topic-level `view_other_topics` authorization. As a result, in forums where users may enter the forum but may only view their own topics, reactions can still be read and modified on other users' topics. Version 2.2.5 fixes the issue.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00235 14th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

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

VendorProductAffected versionsFixed inStatusSource
NamelessMCNameless= 2.2.4—No fix listedCNA
  • Nameless VendorNamelessMC Affected = 2.2.4 Fixed in — No fix listed CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:namelessmc:nameless:*:*:*:*:*:*:*:*——NamelessMC
  • cpe:2.3:a:namelessmc:nameless:*:*:*:*:*:*:*:* Versions — — ·NamelessMC

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-35443

References

Other 1

  • 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-2026-29091 NamelessMC: Reactions on private or blocking profile posts can be read and modified without proper authorization CVSS 4.0MEDIUM 6.9
  • TI-2022-02614 Session Fixation in namelessmc/nameless CVSS 3.1HIGH 8.2
See all 19 →

Sources

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