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CVE-2026-35443— NamelessMC: Forum reactions bypass the "view own topics only" restriction

Quick assessment

Affected
NamelessMC Nameless
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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 2.2.4版本存在安全漏洞，该漏洞源于未重新强制topic-level view_other_topics授权，可能导致在论坛中读取和修改其他用户主题的反应。

AI Predicted 6.5 Difficulty: Easy EPSS 0.24% · P15

Possible ATT&CK Techniques 1 AI

T1528 · Steal Application Access Token

Affected Version Matrix 1

VendorProduct Version RangeStatus
NamelessMC Nameless = 2.2.4 affected
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I. Basic Information for CVE-2026-35443

Vulnerability Information
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Vulnerability Title
NamelessMC: Forum reactions bypass the "view own topics only" restriction
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
NamelessMC 安全漏洞
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 2.2.4版本存在安全漏洞，该漏洞源于未重新强制topic-level view_other_topics授权，可能导致在论坛中读取和修改其他用户主题的反应。
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 = 2.2.4 -

II. Public POCs for CVE-2026-35443

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III. Intelligence Information for CVE-2026-35443

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Vendor Advisories for CVE-2026-35443 (1)

Same Patch Batch · NamelessMC · 2026-06-02 · 7 CVEs total

CVE-2026-34460 5.4 MEDIUM NamelessMC: OAuth callback `state` is not validated, allowing login CSRF / session swappin
CVE-2026-32250 4.3 MEDIUM NamelessMC has Reflected Cross-Site Scripting (XSS) in id parameter of /index.php?route=/q
CVE-2026-33398 Authenticated users can read hidden forum posts through `/forum/get_quotes`
CVE-2026-35447 NamelessMC: Private or blocking profile pages can be bypassed with direct POST requests, a
CVE-2026-40314 NamelessMC: Reactions on private or blocking profile posts can be read and modified withou
CVE-2026-40571 NamelessMC: Reactions on private or blocking profile posts can be modified without proper

IV. Related Vulnerabilities

Same product: Nameless
Same vendor: NamelessMC
Same weakness: CWE-862

V. Comments for CVE-2026-35443

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