Vulnerability · Published Jun 2, 2026 · Assigned by GitHub_M

CVE-2026-40571NamelessMC: Reactions on private or blocking profile posts can be modified without proper authorization

Medium 5.3

In plain English

A medium-severity missing authorization in Nameless from NamelessMC. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 15% of all known vulnerabilities).

Severity (CVSS 4.0)5.3Medium

Exploit odds (30 days)0.2%top 85.4% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official 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.

Affected products (as reported)

Vendor	Product	Versions
NamelessMC	Nameless	= 2.2.4

Weakness: CWE-862 · Vector: 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

References

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