CVE-2026-40571

NamelessMC: Reactions on private or blocking profile posts can be modified without proper authorization

State: Published
Severity: 5.3 Medium
Published: Jun 2, 2026
Updated: Jun 3, 2026
Reserved: Apr 14, 2026

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.

Scores

CVSS	Score	Vector	Source
4.0	5.3 Medium	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	GitHub_M

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
NamelessNamelessMC	= 2.2.4Affected

References

https://github.com/NamelessMC/Nameless/security/advisories/GHSA-47hr-jj6c-rqf9

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