CVE-2026-40571: CWE-862: Missing Authorization in NamelessMC Nameless
NamelessMC is website software for Minecraft servers. In version 2.2.4, `core/classes/Misc/ProfilePostReactionContext.php` only verifies that the wall post exists and does not enforce blocked/private-profile visibility. This means that authenticated low-privileged users can add reactions to private or blocking profile posts. Version 2.2.5 contains a patch.
AI Analysis
Technical Summary
CVE-2026-40571 describes a missing authorization vulnerability (CWE-862) in NamelessMC Nameless version 2.2.4. The vulnerability exists because the code in core/classes/Misc/ProfilePostReactionContext.php verifies only the existence of a wall post but does not enforce restrictions related to blocked or private profile visibility. Consequently, authenticated users with limited privileges can add reactions to posts on profiles that should be inaccessible to them. This issue is fixed in version 2.2.5.
Potential Impact
An authenticated low-privileged user can interact with private or blocking profile posts by adding reactions, potentially violating user privacy and expected access controls. There is no indication of privilege escalation or remote code execution. The CVSS 4.0 base score is 5.3, indicating a medium severity impact with network attack vector and low complexity.
Mitigation Recommendations
Upgrade NamelessMC Nameless to version 2.2.5 or later, where this authorization issue has been patched. No other mitigation or temporary workaround is indicated in the available data.
CVE-2026-40571: CWE-862: Missing Authorization in NamelessMC Nameless
Description
NamelessMC is website software for Minecraft servers. In version 2.2.4, `core/classes/Misc/ProfilePostReactionContext.php` only verifies that the wall post exists and does not enforce blocked/private-profile visibility. This means that authenticated low-privileged users can add reactions to private or blocking profile posts. Version 2.2.5 contains a patch.
CVSS v4.0
Score 5.3medium
Affected software
pkg:github/namelessmc/NamelessRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-40571 describes a missing authorization vulnerability (CWE-862) in NamelessMC Nameless version 2.2.4. The vulnerability exists because the code in core/classes/Misc/ProfilePostReactionContext.php verifies only the existence of a wall post but does not enforce restrictions related to blocked or private profile visibility. Consequently, authenticated users with limited privileges can add reactions to posts on profiles that should be inaccessible to them. This issue is fixed in version 2.2.5.
Potential Impact
An authenticated low-privileged user can interact with private or blocking profile posts by adding reactions, potentially violating user privacy and expected access controls. There is no indication of privilege escalation or remote code execution. The CVSS 4.0 base score is 5.3, indicating a medium severity impact with network attack vector and low complexity.
Mitigation Recommendations
Upgrade NamelessMC Nameless to version 2.2.5 or later, where this authorization issue has been patched. No other mitigation or temporary workaround is indicated in the available data.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-14T13:24:29.474Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a1f1079e29bf47b50e963a6
Added to database: 06/02/2026, 17:18:49 UTC
Last enriched: 06/10/2026, 11:15:24 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 91
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