---
id: CVE-2026-48115
title: 'Misskey is an open source, federated social media platform'
summary: >-
  Misskey is an open source, federated social media platform. All Misskey
  servers running versions 2024.5.0 and later, but prior to 2026.5.4, contain a
  vulnerability in the Server Announcements API where insufficient permission
  checks allo…
severity: none
cwe:
  - CWE-285
published: '2026-08-03'
updated: '2026-09-08'
sourceUpdated: '2026-09-08T20:51:43.490'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-48115'
references:
  - url: 'https://github.com/misskey-dev/misskey/releases/tag/2026.5.4'
    label: security-advisories@github.com
  - url: >-
      https://github.com/misskey-dev/misskey/security/advisories/GHSA-j49q-76hx-mv8f
    label: security-advisories@github.com
tags:
  - nvd
epss: 0.00249
epssPercentile: 0.16538
ingestedAt: '2026-09-08T21:11:12.264Z'
---

## Overview

Misskey is an open source, federated social media platform. All Misskey servers running versions 2024.5.0 and later, but prior to 2026.5.4, contain a vulnerability in the Server Announcements API where insufficient permission checks allow attackers to access limited portions of data that they normally couldn't view. This vulnerability occurs whether or not federation is enabled. This issue has been fixed in version 2026.5.4.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.